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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Shafts
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About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
More
Flange-Mount Shaft Collars

Three tapped counterbored holes and three unthreaded holes provide mounting flexibility. Collars clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screws to secure.
Collars with keyway have a standard ANSI keyway for use with keyed shafts, keys, and key stock.
Black-oxide steel collars are stronger than aluminum and stainless steel collars. They have some corrosion resistance. Aluminum collars are lightweight and have good corrosion resistance. 303 stainless steel collars have excellent corrosion resistance.
Optional flange extensions extend the flange OD of the collars to handle larger components. All are machinable and weldable.
For technical drawings and 3-D models, click on a part number.
Flange | Keyway | Clamping Screw | Counterbored Mounting Holes | Unthreaded Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | OD | Wd. | OD | Thick. | Wd. | Dp. | Type | No. Included | Mounting Fasteners Included | Thread Size | No. of | Dia. | No. of | Each | |
Black-Oxide 1117 Carbon Steel | |||||||||||||||
1/4" | 13/16" | 5/8" | 1 15/32" | 1/4" | __ | __ | Socket Head Screw | 2 | No | 4-40 | 3 | 1/8" | 3 | 0000000 | 000000 |
3/8" | 1 1/16" | 11/16" | 1 23/32" | 1/4" | 3/32" | 1/16" | Socket Head Screw | 2 | No | 6-32 | 3 | 5/32" | 3 | 0000000 | 00000 |
1/2" | 1 1/4" | 3/4" | 2 7/32" | 9/32" | 1/8" | 1/16" | Socket Head Screw | 2 | No | 8-32 | 3 | 5/32" | 3 | 000000 | 00000 |
5/8" | 1 1/2" | 13/16" | 2 19/32" | 5/16" | 3/16" | 5/64" | Socket Head Screw | 2 | No | 10-32 | 3 | 3/16" | 3 | 000000 | 00000 |
3/4" | 1 3/4" | 1" | 2 31/32" | 13/32" | 3/16" | 5/64" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 000000 | 00000 |
1" | 2" | 1" | 3 7/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 000000 | 00000 |
1 1/8" | 2 1/8" | 1" | 3 7/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 00000 |
1 1/4" | 2 1/4" | 1" | 3 15/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 000000 | 00000 |
1 3/8" | 2 3/8" | 1" | 3 19/32" | 13/32" | 5/16" | 5/64" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 00000 |
1 1/2" | 2 1/2" | 1" | 3 23/32" | 13/32" | 3/8" | 5/32" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 000000 | 00000 |
1 3/4" | 3" | 1 1/4" | 4 15/32" | 1/2" | 3/8" | 11/64" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 00000 |
1 15/16" | 3 1/4" | 1 1/4" | 4 23/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2" | 3 1/4" | 1 1/4" | 4 23/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 3/16" | 3 1/2" | 1 1/4" | 4 31/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 1/4" | 3 1/2" | 1 1/4" | 4 31/32" | 1/2" | 1/2" | 3/16" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 7/16" | 4" | 1 3/8" | 5 23/32" | 1/2" | 5/8" | 9/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
2 1/2" | 4" | 1 3/8" | 5 23/32" | 1/2" | 5/8" | 9/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
3" | 4 1/2" | 1 3/8" | 6 11/32" | 1/2" | 3/4" | 11/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
2024 Aluminum | |||||||||||||||
1/4" | 13/16" | 5/8" | 1 15/32" | 1/4" | __ | __ | Socket Head Screw | 2 | No | 4-40 | 3 | 1/8" | 3 | 0000000 | 00000 |
3/8" | 1 1/16" | 11/16" | 1 23/32" | 1/4" | 3/32" | 1/16" | Socket Head Screw | 2 | No | 6-32 | 3 | 5/32" | 3 | 0000000 | 00000 |
1/2" | 1 1/4" | 3/4" | 2 7/32" | 9/32" | 1/8" | 1/16" | Socket Head Screw | 2 | No | 8-32 | 3 | 5/32" | 3 | 0000000 | 00000 |
5/8" | 1 1/2" | 13/16" | 2 19/32" | 5/16" | 3/16" | 5/64" | Socket Head Screw | 2 | No | 10-32 | 3 | 3/16" | 3 | 0000000 | 00000 |
3/4" | 1 3/4" | 1" | 2 31/32" | 13/32" | 3/16" | 5/64" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 00000 |
1" | 2" | 1" | 3 7/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 00000 |
1 1/8" | 2 1/8" | 1" | 3 7/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 00000 |
1 1/4" | 2 1/4" | 1" | 3 15/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 3/8" | 2 3/8" | 1" | 3 19/32" | 13/32" | 5/16" | 5/64" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 1/2" | 2 1/2" | 1" | 3 23/32" | 13/32" | 3/8" | 5/32" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 3/4" | 3" | 1 1/4" | 4 15/32" | 1/2" | 3/8" | 11/64" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
1 15/16" | 3 1/4" | 1 1/4" | 4 23/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2" | 3 1/4" | 1 1/4" | 4 23/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 3/16" | 3 1/2" | 1 1/4" | 4 31/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 1/4" | 3 1/2" | 1 1/4" | 4 31/32" | 1/2" | 1/2" | 3/16" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 7/16" | 4" | 1 3/8" | 5 23/32" | 1/2" | 5/8" | 9/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
2 1/2" | 4" | 1 3/8" | 5 23/32" | 1/2" | 5/8" | 9/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
3" | 4 1/2" | 1 3/8" | 6 11/32" | 1/2" | 3/4" | 11/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
303 Stainless Steel | |||||||||||||||
1/4" | 13/16" | 5/8" | 1 15/32" | 1/4" | __ | __ | Socket Head Screw | 2 | No | 4-40 | 3 | 1/8" | 3 | 0000000 | 00000 |
3/8" | 1 1/16" | 11/16" | 1 23/32" | 1/4" | 3/32" | 1/16" | Socket Head Screw | 2 | No | 6-32 | 3 | 5/32" | 3 | 0000000 | 00000 |
1/2" | 1 1/4" | 3/4" | 2 7/32" | 9/32" | 1/8" | 1/16" | Socket Head Screw | 2 | No | 8-32 | 3 | 5/32" | 3 | 0000000 | 00000 |
5/8" | 1 1/2" | 13/16" | 2 19/32" | 5/16" | 3/16" | 5/64" | Socket Head Screw | 2 | No | 10-32 | 3 | 3/16" | 3 | 0000000 | 000000 |
3/4" | 1 3/4" | 1" | 2 31/32" | 13/32" | 3/16" | 5/64" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1" | 2" | 1" | 3 7/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 1/8" | 2 1/8" | 1" | 3 7/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 1/4" | 2 1/4" | 1" | 3 15/32" | 13/32" | 1/4" | 1/8" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 3/8" | 2 3/8" | 1" | 3 19/32" | 13/32" | 5/16" | 5/64" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 1/2" | 2 1/2" | 1" | 3 23/32" | 13/32" | 3/8" | 5/32" | Socket Head Screw | 2 | No | 1/4"-20 | 3 | 1/4" | 3 | 0000000 | 000000 |
1 3/4" | 3" | 1 1/4" | 4 15/32" | 1/2" | 3/8" | 11/64" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
1 15/16" | 3 1/4" | 1 1/4" | 4 23/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2" | 3 1/4" | 1 1/4" | 4 23/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 3/16" | 3 1/2" | 1 1/4" | 4 31/32" | 1/2" | 1/2" | 7/32" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 1/4" | 3 1/2" | 1 1/4" | 4 31/32" | 1/2" | 1/2" | 3/16" | Socket Head Screw | 2 | No | 5/16"-18 | 3 | 5/16" | 3 | 0000000 | 000000 |
2 7/16" | 4" | 1 3/8" | 5 23/32" | 1/2" | 5/8" | 9/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
2 1/2" | 4" | 1 3/8" | 5 23/32" | 1/2" | 5/8" | 9/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
3" | 4 1/2" | 1 3/8" | 6 11/32" | 1/2" | 3/4" | 11/32" | Socket Head Screw | 2 | No | 3/8"-16 | 3 | 3/8" | 3 | 0000000 | 000000 |
Flange | Keyway | Clamping Screw | Counterbored Mounting Holes | Unthreaded Mounting Holes | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | OD, mm | Wd., mm | OD, mm | Thick., mm | Wd., mm | Dp., mm | Type | No. Included | Mounting Fasteners Included | Thread Size | Thread Pitch, mm | No. of | Dia., mm | No. of | Each | |
Black-Oxide 1117 Carbon Steel | ||||||||||||||||
6 | 16 | 19 | 38 | 6.9 | __ | __ | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 000000 |
8 | 18 | 19 | 41 | 6.9 | 2 | 1 | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
10 | 24 | 19 | 45 | 6.9 | 3 | 1.4 | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
12 | 28 | 19 | 55 | 6.9 | 4 | 1.8 | Socket Head Screw | 2 | No | M4 | 0.7 | 3 | 4 | 3 | 0000000 | 00000 |
16 | 34 | 20.6 | 63 | 6.9 | 5 | 2.3 | Socket Head Screw | 2 | No | M5 | 0.8 | 3 | 5.4 | 3 | 0000000 | 00000 |
18 | 36 | 20.64 | 63 | 6.85 | 6 | 2.8 | Socket Head Screw | 2 | No | M5 | 0.8 | 3 | 5.4 | 3 | 0000000 | 00000 |
20 | 40 | 25.4 | 69 | 7.9 | 6 | 2.8 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 00000 |
25 | 45 | 25.4 | 75 | 7.9 | 8 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 00000 |
30 | 54 | 25.4 | 82 | 7.9 | 8 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 00000 |
35 | 57 | 25.4 | 88 | 7.9 | 10 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 00000 |
40 | 60 | 25.4 | 92 | 7.9 | 12 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
45 | 73 | 32 | 107 | 13 | 14 | 3.8 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 8.4 | 3 | 0000000 | 000000 |
50 | 78 | 31.75 | 114 | 12.7 | 14 | 3.8 | Socket Head Screw | 2 | No | M8 | 1.25 | 3 | 8.4 | 3 | 0000000 | 000000 |
2024 Aluminum | ||||||||||||||||
6 | 16 | 19 | 38 | 6.9 | __ | __ | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
8 | 18 | 19 | 41 | 6.9 | 2 | 1 | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
10 | 24 | 19 | 45 | 6.9 | 3 | 1.4 | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
12 | 28 | 19 | 55 | 6.9 | 4 | 1.8 | Socket Head Screw | 2 | No | M4 | 0.7 | 3 | 4 | 3 | 0000000 | 00000 |
16 | 34 | 20.6 | 63 | 6.9 | 5 | 2.3 | Socket Head Screw | 2 | No | M5 | 0.8 | 3 | 5 | 3 | 0000000 | 00000 |
18 | 36 | 20.64 | 63 | 6.85 | 6 | 2.8 | Socket Head Screw | 2 | No | M5 | 0.8 | 3 | 5 | 3 | 0000000 | 00000 |
20 | 40 | 25.4 | 69 | 7.9 | 6 | 2.8 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 00000 |
25 | 45 | 25.4 | 75 | 7.9 | 8 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 00000 |
30 | 54 | 25.4 | 82 | 7.9 | 8 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
35 | 57 | 25.4 | 88 | 7.9 | 10 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
40 | 60 | 25.4 | 92 | 7.9 | 12 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
45 | 73 | 32 | 107 | 13 | 14 | 3.8 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 8.4 | 3 | 0000000 | 000000 |
50 | 78 | 31.75 | 114 | 12.7 | 14 | 3.8 | Socket Head Screw | 2 | No | M8 | 1.25 | 3 | 8 | 3 | 0000000 | 000000 |
303 Stainless Steel | ||||||||||||||||
6 | 16 | 19 | 38 | 6.9 | __ | __ | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
8 | 18 | 19 | 41 | 6.9 | 2 | 1 | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
10 | 24 | 19 | 45 | 6.9 | 3 | 1.4 | Socket Head Screw | 2 | No | M3 | 0.5 | 3 | 3 | 3 | 0000000 | 00000 |
12 | 28 | 19 | 55 | 6.9 | 4 | 1.8 | Socket Head Screw | 2 | No | M4 | 0.7 | 3 | 4 | 3 | 0000000 | 00000 |
16 | 34 | 20.6 | 63 | 6.9 | 5 | 2.3 | Socket Head Screw | 2 | No | M5 | 0.8 | 3 | 5.4 | 3 | 0000000 | 00000 |
18 | 36 | 20.64 | 63 | 6.85 | 6 | 2.8 | Socket Head Screw | 2 | No | M5 | 0.8 | 3 | 5.4 | 3 | 0000000 | 000000 |
20 | 40 | 25.4 | 69 | 7.9 | 6 | 2.8 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
25 | 45 | 25.4 | 75 | 7.9 | 8 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
30 | 54 | 25.4 | 82 | 7.9 | 8 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
35 | 57 | 25.4 | 88 | 7.9 | 10 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
40 | 60 | 25.4 | 92 | 7.9 | 12 | 3.3 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 6 | 3 | 0000000 | 000000 |
45 | 73 | 32 | 107 | 13 | 14 | 3.8 | Socket Head Screw | 2 | No | M6 | 1 | 3 | 8.4 | 3 | 0000000 | 000000 |
50 | 78 | 31.75 | 114 | 12.7 | 14 | 3.8 | Socket Head Screw | 2 | No | M8 | 1.25 | 3 | 8.4 | 3 | 0000000 | 000000 |
Easy-Access Flange-Mounted Shaft Supports

A removable collar allows access to the shaft without unbolting the flange. For use with light to medium loads where shaft alignment is not critical, these carbon steel supports allow you to hold linear shafts perpendicular to the mounting surface. Secure the shaft by tightening the clamping screw.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Hole | ||||||||
---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Dia. | Wd. | Flange Thick. | Bolt Circle Dia. | No. of | Dia. | Clamping Screw Thread Size | Each | |
Inch—1117 Carbon Steel | |||||||||
1/4" | 1 5/8" | 3/4" | 1/4" | 1 11/32" | 4 | 0.15" | 6-32 | 000000 | 000000 |
3/8" | 1 5/8" | 3/4" | 1/4" | 1 11/32" | 4 | 0.15" | 6-32 | 000000 | 00000 |
1/2" | 2 1/4" | 1" | 5/16" | 1 3/4" | 4 | 0.177" | 8-32 | 000000 | 00000 |
5/8" | 2 5/8" | 1" | 5/16" | 2 1/8" | 4 | 0.201" | 10-32 | 000000 | 00000 |
3/4" | 3" | 1" | 5/16" | 2 3/8" | 4 | 0.266" | 1/4"-28 | 000000 | 00000 |
1" | 3 1/4" | 1 5/8" | 3/8" | 2 3/4" | 4 | 0.266" | 1/4"-28 | 000000 | 00000 |
1 1/4" | 3 1/2" | 1 5/8" | 3/8" | 3" | 4 | 0.266" | 1/4"-28 | 000000 | 00000 |
1 1/2" | 3 3/4" | 2" | 13/32" | 3 1/4" | 4 | 0.266" | 1/4"-28 | 000000 | 00000 |
2" | 4 1/2" | 2 3/8" | 1/2" | 3 7/8" | 4 | 0.328" | 5/16"-24 | 000000 | 000000 |