4. 4 3 3 11 12 4 1. Full-radius half-moon keys are a full half-circle in size, which fully interface with the shaft's key seat. When used on plain shafts, the bearing can be located at any position on the shaft. Key Stock is most often used to make machinery keys that are used to locate components onto a round shaft. 5/8 X 5/16. 3mm 5mm 5mm 18mm 22mm 6mm 2. Assortment has Step Key Stock for Shafts & for Gears (1) Oversized Assortment (1) Seven Pieces will Fit 11 Different Key Ways (1) Height (mm) Search Height. Fully keyed shafts provide a good fit between the key and the keyway. Performance Tool 6 Piece SAE Hex Key Set - W1939. 053 7/16 0. Keyway Width. Unless otherwise specified, the shaft keyway is assumed to be standard. Inch Worms & Worm Shafts; Metric Worms; Sprockets,. HaSaoMoi 200pcs Metric Woodruff Key Assortment Kit with 15 Most Popular Sizes - Woodruff semicircle Key - Half Moon Key - Keyway - Shaft Crank Key. The code also applies a factor of 0. Install these keys in a drilled and reamed hole to locate fixtures and vises on your machine table. Fully threaded, headless screw with a hexagonal drive at one end and a cup-shaped indentation at the other. Use the included set screw or shaft collar to fasten a blade to your fan's shaft. Choose from our selection of keyed bushings, including shaft collars, rigid shaft couplings, and more. TORX Offset T-Handle Hex Key Set, 6 PieceTechnifast provide a varied range of keys including round end, square end and one round/one square end parallel keys (also known as feather keys), woodruff keys and gib head keys which are available in metric and inch sizes. 2M. They have a long shaft that reaches into tight spots to turn fasteners. Amazon. Stress Concentration Shaft. Keyway toleranceKeyway-and-key-size-dimensions. Standard Metric Keys Keyways for Metric Bores with One Key; Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. 5 mm. 14 mm. 2. Use a stainless steel L-key to protect your stainless steel screws. Mount these pulleys with a taper-lock bushing for a tight, wobble-free hold on your shaft. We also supply key steel in either 300mm or 1000mm lengths in C45k material and 316 (A4) stainless steel. 12 mm. All dimensions are given in inches. Metric Key And Key Stock Assortment Kits KEY STOCK IN STEEL CASE DIN 6880, ACCURACY h9 IN 250mm LENGTHS 20 KIT. 5 x 19 5 x 9 x 22 6 x 9 x 22 8 x 9 x 22 5 x 10 x 25 6 x 10 x 25 8 x 10 x 25 6 x 11 x 28 8 x 11 x 28 10 x 11 x 28 8 x 13. In any case, keep in mind that adding a keyway to an existing shaft weakens the shaft. Use them to connect gears and other components with tapered keyways to shafts. Flexible Shaft Coupling - Bellows, Mini, Clamping, MK2 Series, Inch Bore. Although these collars fit inch-sized shafts, they have a metric OD and width. 5, 2. Designed for cutting keyways and keyseats, these woodruff-style cutters are designed with dished sides for clearance. Inch keys conform to ANSI B17. Principles of sealing selection and application . 1. Recommended Hub Keyway Dimensions (mm) Reference AGMA 9112-A04 Standard metric keyway width tolerance per Js9 Imperial Standard Bore and Keyway Info Recommended Bore Tolerance for Imperial Shafts (Inches) Nominal Shaft Range Shaft Tol. Steel keys offer good strength. Specification for metric keys and keyways – Parallel and taper keys BS 4235-1:1972; Matching the woodruff key to the shaft diameter is also specified in DIN 6888Use them to connect gears and other components to shafts. TruKey Shafting, TruKey, Tru-key Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, keyed, keyed shaft, keyed shafts, keyshaft in the industry. Install a sanding sleeve on the threaded shaft of a bench or pedestal grinder using one of these drums. Figure 4. metric key way dimensions. Taper-Lock Bushing-Bore V-Belt Pulleys. 386 3/32 0. Parallel shaft keys are a type of machine element used to secure the relative rotational position of shafts and components such as gears, pulleys, or couplings that are mounted on them. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86The assorted keys in these sets have an insulated handle and shaft that protect against shock from accidental contact with live electrical circuits. 0001 in. Keyway metric dimensions key iso tolerance js9 r773 width per depth hub t2 height radius text mill question answered hasnSpecifying rectangular keyways Keyway parallelMetric key keyway. PFEIFER INDUSTRIES, LLC. Nominal key size b × h Applied shaft diameter d Key size Keyway size; b h c or r Standard size of b1 and b2 b1Tolerance （h9） b2 tolerance （E9） r1 and r2 t1 t2; Standard size Tolerance（h8） Standard size Tolerance(h10) Standard size Tolerance Standard size Tolerance; 4×4: 10 or more and 13 or below: 4: 0 -0. Woodruff keys work well near shaft shoulders and on tapered shafts. 10X6X40 SS. BS EN ISO 4032 Hexagon nuts style 1 – product grades A and B. 0000 /-. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently. 1 -1967 (2004) standards for metric and inch unit systems. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. With shaft diameters of 3/8" and larger, these gear boxes transmit higher speeds and greater torque than Compact Right-Angle Gear Boxes. Keys and key stock are small metal bars or wedges that fit between an output shaft and the hub of a pulley, gear, sprocket, or other rotating component. 3 mm. They're rated for continuous duty and have a keyed shaft that includes key stock. 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 E-mail: info@pfeiferindustries. A metric M4 x 15 square key is used with a 16 mm shaft. Both keys and splines prevent a part from turning on a shaft. The teeth on the shaft have an equal tooth thickness at any point measured radially out from the axis of rotation. Clearance Fit Bore Tol. Choose from our selection of keyway stock, including machine key stock, rounded machine keys, and more. Choose from our selection of hydraulic pump adapters, including hydraulic pump-to-motor mounts, set screw flexible shaft couplings, and more. nominal shaft diameter bottom of shaft to bottom of keyway width reference depth 0. It has two ends. Default metric fastener thread pitch. Radial shaft seals . Shaft Diameter. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. 5000 0. Woodruff Keys: The woodruff key is so called because of its manufacturing. ANSI Woodruff Keys. All dimensions in inches. 1,000 mm. Dec. 010 inch or ±. Also known as E-Style and C-style rings, slide these into the groove from the side of the shaft. One of the following methods should be used to specify keyways: Metric: WxH Key W x T2 Keyway British. 2. Just enter the size of the key and shaft, then click "Calculate". $1399. The key length should be less than 1. PFEIFER INDUSTRIES, LLC. Keyway dimensionsKeyway aii Metric keyway tolerance chartShaft and hub keyway dimensions. 49. Keyway Broach 1/16 to 1-1/2 Inch, 2. For technical drawings and 3-D models, click on a part number. With the key resting in the shaft keyway, position the sprocket/sheave and bushing assembly onto the shaft allowing for small axial movement of the sprocket/sheave which will occur duringKeysteel also known as Key Bar or Key Steel, We stock probably the biggest range of Keysteel in the UK for both Metric and Imperial profiles, stocked in self colour or bright zinc plated. 3. It is essential that only a side-fitting parallel key with TOP CLEARANCE be used. When a keyway is damaged, cut a new, wider one. Choose from our selection of half-moon keys, including over 150 products in a wide range of styles and. They are primarily used in compact applications like electronics and aren’t seen in every industry. Keyway slot tolerancesShaft keyway depth calculator Keyway shaft drive dimensions key belt double standard system metric solved width been load transcribed text showWoodruff keyseat sizes dimensions. 24. Change heads to use these tools as an open- end, box, square drive, or hex-key wrench. Shaft Couplings. Solid Rigid Shaft to Shaft Couplings Design Equations and Calculator. Minimum keyseat width is that figure. They are useful for shaft end. These tools are tested to 1, 000 volts to meet IEC 60900 and ASTM F1505-01. pdf Products below. Metric shafts 25mm to 240mm (larger upon request) Inch shafts 1 to 6-1/2 inch (larger upon request)Metric Hubless Spur Gear - Nordex, Inc. Use them in light duty applications to connect gears and other components to shafts. Cutting a keyway using a broaching tool and a press. Sprockets; Fasteners, Hardware, Assembly tools. Allen (hex) key and hex bit sizes Hex key sizes chart Metric hex socket key sizes chart Spline key and bit sizes Drill bits - Jobbers length twist drills Drill bits - Straight shank taper length. Max. Shaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. See dimensions W and h in Figure 1. They have a long shaft that reaches into tight spots to turn fasteners. Drive Shaft Key - 8mm 10mm 12mm 16mm 20mm 25mm 30mm Round Ended Feather Key, Parallel Key Set, 140-Pack. Heavy Duty Side-Mount External Retaining Rings. Bore sizes range from 3/8” to 3” and 8mm to 65mm. Great Neck SAE and Metric Hex Key Set with Holder 20 Piece $ 9. 9 mm, & 1. Recommended uniform relationship between shaft diameter and key sizes for parallel and taper keys. clearance fit bores with set screws. 10X6X80. Keyway Blank - Keyway Plastic Box - Flywheel Keys - Pump Shaft Key - 1/4 Key Stock - 3/16 key stock. These rings are reinforced to withstand faster rotation than other side‐mount retaining rings. 2 metric standards . A Adapter Sleeve Components B Ball Joints Balls Banded V-Belts Bars Bearings Belts Bushings Bushings, Taper Bushings C Calipers Chain Chain Guides Clamping Plates Conveyor Corrosion Protection Couplings D E Elements F Fork Joints G Gear Rack Gears Grease Fittings Grips H Handles Hexagon Bars Hydraulic I J K Keyless Locking Rings Keys Knobs L. Just enter the size of the key and shaft, then click "Calculate". MISUMI can machine the shaft hole for the pulley of the Mitsuboshi belt without drawings for delivery. 00. Made with two pieces, these shaft supports secure your shaft parallel to your mounting surface. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. 5 x 19 6 x 7. 000 +. 34 N-m 6. 2 mm. The key length should be less than about 1. 062" 1/16" 0. NSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. All sizes are in inch units. 0mm 2mm 2mm 9mm 10mm 3mm 1. The shaft keyway and hub keyway dimensions according to ISO 6887 - taper keys with gib head - are equal to those in ISO 6886shaft tolerance table (iso) ≥ ＜ b10 c9 d8 e7 e8 f7 g7 h6 h7 h8 js7 k7 m7 n7 p7 r7 s7 t7 - 3 +180 +140 +85 +60 +34 +20 +24 +14 +28 +14 +16 +6 +12 +2 +6 0 +10 0 +14 0 ±5 0-10-2-12-4-14-6-16-10-20-14-24-3 6 +188 +140 +100 +70 +48 +30 +32 +20 +38 +20 +22 +10 +16 +4 +8 0 +12 0 +18 0 ±6 +3-9 0-12-4-16-8-20-11-23-15-27-6 10140pcs Key Stock Pulley, Stainless Steel Woodruff Key Assortment, Metric Key Stock Assortment, Shaft Feather Key, Keyway, Parallel Key, Shaft Key Set for Fastening Many Different Equipments . These tools are tested to 1, 000 volts to meet IEC 60900 and ASTM F1505-01. 322 3/32 0. January 1, 1985. 094 0. 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 E-mail: info@pfeiferindustries. Clearance fit (keys and setscrews) Keyed clearance fit couplings are most frequently used on lower-power applications with shafts under about 2. EN. 10 products. 1. A square key is used if the deeper key depth is required to transmit torque. the shaft providing a tight grip . 316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. Press it into place for use in high-torque applications or to replace a key in a worn keyway. How much torque can the assembly handle? The rotational speed of the shaft is 600 rpm. Cut-to-Width Abrasion-Resistant Idler Rollers. It may be mildly magnetic. Crank cotter pins are short shafts, threaded on one end, with a flat tapered so that the low end of the flat is at the threaded end of the pin. 5 in (about 65 mm). We can provide keyed shafting in any length up to 20 foot. A keyed shaft houses a machine key or keystock and works in unison with a rotating machine element to transmit torque to power transmission components. Measure the outside of the threads (See Image 2). Keyway (Shaft. Use them to connect gears and other components to shafts. This is a +/- band clearance; the value of the tolerance is equally oversized or undersized. A complete coupling consists of two hubs and one spider, or two hubs,. On our list, we have six hex key sizes that we like to classify as precision hex sizes. In stock and ready to ship. 5 mm. The key and key seat cross section are ISO standardized. Change heads to use these tools as an open-end, box, square drive, or hex-key wrench. The keyway in the hub has a taper that matches that of the tapered key. Plastic Ratcheting Gears. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. Min. 3 mm. For technical drawings and 3-D models, click on a part number. A Shaft key is a piece of metal used to connect a rotating machine element to the shaft. Steel keys offer good strength. Keyway (Hub) Radius r. Axle Seals. These shafts have keyways only on the ends, leaving a plain shaft in the center. All of our products, blueprints, and details can be made in standard or metric. 05″ and the precision metric sizes are 0. 2-1967. Also known as sine keys. and SAE sizes makes it easy to find the tool you need — even smaller wrenches that don’t have a size printed on the shaft. Inch-to-Metric Female Hex Thread Adapters. CLOSE RUNNING: For accurate location and moderate speeds. 719 Inch 0. H7/h6. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account . keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keysKeys standard metric keyways mechanicalMetric keyway shaft depth reference dimensions diameter iso r773 width Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k keyKeyway metric dimensions keys. 4mm 3mm 3mm 11mm 12mm 4mm 1. * These Width A values were set with the maximum keyseat (shaft) width as that figure which will receive a key with the greatest amount of looseness consistent with assuring the key's sticking in the keyseat (shaft). A rectangular key is used in a pulley connected to a line shaft at 15 KW and 600 rpm. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Shims for Keyway Broaches. Frac. 8mm 4mm 4mm 13mm 17mm 5mm 2. 1, the Metric key size is W x T. FREE delivery Thu, Nov 2 on $35 of items shipped by Amazon. pdf Gates belts, hoses, and applications: standard & non-standard shaft keyMetric keyway. A hex key (also, hex wrench, Allen key and Allen wrench or Inbus) is a simple driver for bolts or screws that have heads with internal hexagonal recesses (). 6. MPa. Home Delivery. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys A Adapter Sleeve Components B Ball Joints Balls Banded V-Belts Bars Bearings Belts Bushings Bushings, Taper Bushings C Calipers Chain Chain Guides Clamping Plates Conveyor Corrosion Protection Couplings D E Elements F Fork Joints G Gear Rack Gears Grease Fittings Grips H Handles Hexagon Bars Hydraulic I J K Keyless Locking Rings Keys Knobs L. If you are looking for a comprehensive and reliable source of information on jaw type couplings, you should download the Jaw Type Catalog PDF from Lovejoy, a Timken company. This shafting is true and straight and needs no turning, but if keyways are cut in the shaft, it must usually be straightened afterwards, as the cutting of the keyways relieves the. Drill Chuck Holders for Quick-Change Lathe Tool Posts. 322 0. Aubuchon Hardware is a member of the Aubuchon Company family of brands. These tools are tested to 1, 000 volts to meet IEC 60900 and ASTM F1505-01. 5 +. 6 mm. 188" 1/4". In stock and ready to ship. In stock and ready to ship. Once the overload is removed, the limiters automatically reset. 8, 1. Cut it to length to create the machine key you need. Choose from our selection of 3/8" hex drivers in a wide range of styles and sizes. 3 mm. 51144 1804842. The letter is the tolerance deviation, the number the tolerance grade. 10X8X100. 2; ANSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. When cut to length Key Stock fits into slots cut into a shaft and a component such as a pulley or sprocket creating an assembly that rotates as one unit. ASTM Standard. 2. A gear or other component with a woodruff keyway is then. ANSI Key No. K s / (π. 4 mm. Keys and Keyways: Dimension charts for Keys and Keyways: Limits, fits and tolerances calculators: Calculates the limits, fits and tolerances according to ISO 286(2010), ANSI B4. Steel keys offer good strength. 5. Styles A-C blades are for use in low-airflow applications. If a key is to be fitted, place it in the shaft keyway before fitting the bush. DO NOT USE LUBRICANTS 4. Metric Woodruff Keys DIN 6888 5 x 6. Power transmission seals . Sign In; Cart; Menu. 3-2003. Great Neck Metric SAE Torx Hex Key Set. 3M. The tamper-resistant hex drive (also known as a pin-in hex drive) makes them difficult to remove without special tools. 4375 1. shear stress key τ = F s / (L搓) MPa. 047" 0. Socket. This stress can be derived from the torsion formula: τ max = T D o / 2 J. COMPONENTS PowerDrive LLC Bore Tolerance 0 to 2 2 to 3 3 to 4 Over 4 +. Clamping Shaft Collars with Precision-Ground Face. Mount between a rotating shaft and equipment to secure the shaft and reduce vibration. bearing pressure p = F s / (h/2 微) MPa. Metric hex key wrenches made in germany from . Keystock is a versatile raw material used to make many types of machine keys, pins, gears, and for conducting quick field repairs on machine keys and shafts. 2. Metric Keysteel to DIN 6880. 0 2 2 9 10 3 1. 30 Clearance and Interference Fits between Two Shafts and a Hole Shaft A is a clearance fit, and shaft B is an interference fit. Shaft with Two Keyways Torque Applied Deformation and Stress Equations and Calculator. PFEIFER INDUSTRIES, LLC. Choose from our selection of metric keys in a wide range of styles and sizes. 2 standards for dimensions and tolerances. Series: A 1M33M. •Material : 1045 Carbon Steel or Equivalent, Steel•Shape : Shape B For complete product overview and details on Spur Gear - Pressure Angle 20°, Module 0. 3. These splines are known as straight splines. Shaft diameters range from 5 to 35 mm. The rods are bent to 90º, forming two arms of unequal. ) at a maximum of 2 lobes or less than 0,0025 mm (0. Using equation [1], the minimum shaft size would be: Or, in metric units: To see how much of a safety factor is built into the above equations, substitute 400 hp for the 200 hp power rating. Use these end mills for general purpose keyseat cutting in a wide range of material, including aluminum, iron, and steel. Write a review . For technical drawings and 3-D models, click on a part number. Rotary Shafts - Both Ends Tapped. FREE RUNNING: Good for large temperature variations, high running speeds. All orders placed on this website are handled entirely by computers. Fits and tolerance calculator for shaft and hole tolerance calculation according to ISO 286-1 and ANSI B4. 0 out of 5 stars Great assortment, but metric not too practical in North America. Woodruff Keyways & Keys. The American time strike antique units mostly take the size 7 key. Match your measurements to the Clock key size chart to be sure. 000000. Standard Metric Keys and Keyway Bores. Inch keys conform to ANSI B17. Key and Keyseat Dimensions FrameD G F GD Frame D G F GD 63 8. The example sprocket spline has metric dimensions. They have a square or rectangular cross section. After drive has been running under load for a short time stop and check tightness of screws. Specifications for splined shafts include the type of teeth or grooves, materials of construction, diameter, length, and features. No set screw to tighten. Also known as half moon keys. Woodruff Keys. 6 mm. Type C - Keys with both ends round hole for one retaining screw (for sizes 8 X’7 and As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. Volume Discount is available. Figure 4. ANSI B17. The key prevents relative rotation between the two parts and may enable torque transmission. To create a keyed joint, a key is used that fits between slots manufactured into the two parts being joined. The Feather Keys or Shaft Keys are similar to the parallel key except that they are radiused on both ends and machined to tight length tolerances. TORX Offset T-Handle Hex Key Set, 6 Piece. Shaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. Height. Hubless. the Metric Fastener Industry (607) 369-2888 (607) 369-2998. Sealing materials . X. They are easy to install and require no additional location on the shaft. Max. Choose from our selection of shaft keys, including rounded machine keys, machine keys, and more. Multiple fits of shafts of production and piston machines, parts rotating very rarely or only swinging. 10X6X32. Exceptional concentricity. 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 E-mail: [email protected] 10 8 39 44 12 3. The loaded shaft illustrated in Figure 10-6 receives 20 hp at 300 rpm on pully B at a 45° angle from below. 053 0. The rounded ends make it easy to slide gears, hubs, and other components into place. They came to Fitchburg, MA, where the two eldest, William and Arthur began working in the yarn mills. Add a pin, rod-end bolt, or other mounting hardware to build a custom assembly. Great Neck Metric SAE Torx Hex Key Set $ 23. Hex Nuts Metric per. Min. nominal shaft diameter bottom of shaft to bottom of keyway width reference depth 0. Keys are made of steel. When installed, they fill oval keyways completely, reducing stress on the key and shaft. DIN Standard. 125 0. In stock and ready to ship. These Woodruff keys are mostly used in machines, tools & automobile shafts ” to 2½” (6 mm to 60 mm) in diameter. They may be mildly magnetic. 2-1967. Woodruff Key Assortments. Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W” Keyway Depth Hub “T2” Keyway Radius “R" † Shaft Diameter “D” Keyway Width Hub “W” Keyway Depth Hub “T2” Keyway Radius “R”† Over Thru Width “W” Height “H” Metric Shaft Keys are rectangular or square shaped keyways that are used to lock rotating elements onto a shaft. Max. 0938 Metric Standard Parallel Keyway and Key Sizes Shaft Diameter (mm) Keyway (mm) Key (mm)* From To Width (W) Depth (h) Width (W) Depth (T) 6 8 2 1. Flexible Shaft Coupling - Jaw, Inch or Metric Bore. 14 mm. $18. The length can be derived. This technique is used for parts like a gear, hub or pulley. The store will not work correctly in the case when cookies are disabled. Shaft Diameter vs Key Sizes Design Recommendations. Leeson/AMEC. Choose from our selection of pinion gears, including metal gears and gear racks, plastic gears and gear racks, and more. 75mm = 2 Key. 99. 400 mm. Machine the center of these sprockets to fit the exact dimensions of your shaft. Woodruff Key Assortments. Getting your tolerances right is key to making good parts. Choose from our selection of metric sprockets, including over 1,100 products in a wide range of styles and sizes. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. D o 3) =41,5 MPa (F of Safety (S s / τ) of about 4,8) . Choose from our selection of stainless steel shafts in a wide range of styles and sizes. RoyMech Resources Keyways Taper Metric Key and Keyway Dimensions These Pages include various standards. Gib Head Keys: This type of key is quite similar to the tapered key except for a head which is provided at the bigger end of the key in order to facilitate easy removal of the key. Select a motor that fits many applications— these mount from the base or face and at any angle. Standard lengths are 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 45, 50, 56, 63, 71, 80, 90, 100, 112, 125, and 140 millimeters. Key Dimensions. 300 mm. Key Stock , or bright steel, is a general term for a stock of square or rectangular bars 12 inches or longer in length from which machine keys are produced. 3 mm. ANSI B106. Pulley and Sprocket Bushings. ISO 3117:1977 - Tangential keys and keyways; In addition to these active standards, the Mechanical Power Transmission Association's excellent (and free) 18 page "Frequently Asked Questions on Metric Bores and Keyways in Couplings" PDF can be used to discover a number of no longer active (expired or withdrawn) bore and keyway. 0mm Metric, Standard.