For OD For OD |
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For Groove Diameter For Groove Diameter |
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Retaining Ring Style Retaining Ring Style |
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![]() | Side Mount |
Material Material |
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Finish Finish |
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Retaining Ring Type Retaining Ring Type |
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![]() | External |
Ring OD Ring OD |
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Ring Thickness Ring Thickness |
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For Groove Width For Groove Width |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Magnetic Properties Magnetic Properties |
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Minimum Hardness Minimum Hardness |
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Thrust Load Capacity Thrust Load Capacity |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Specifications Met Specifications Met |
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Passivation Passivation |
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Low-Clearance Side-Mount External Retaining Rings

Also known as C-style and crescent rings, these rings have a small shoulder to fit in tight spaces. Use a side-mount retaining ring tool (sold separately) to push them into the groove from the side of the shaft. Ring OD is measured with the ring uninstalled.
1060-1090 spring steel rings are an economical choice with good strength. A black-phosphate finish is mildly corrosion resistant in dry environments, while a zinc yellow-chromate plated finish is corrosion resistant in wet environments.
15-7 PH stainless steel rings are high strength with good corrosion resistance. Rings are passivated for added protection against corrosion.
DIN 1.4122 stainless steel rings withstand wear caused by abrasion, similar to 400 series stainless steel. Rings are passivated for added protection against corrosion.
Thrust load capacity, also known as PR, is based on using a shaft that is harder than the ring.
For technical drawings and 3-D models, click on a part number.
For Groove | Ring | ||||||||||
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For OD | Dia. | Wd. | OD | Thick. | Min. Hardness | Thrust Load Capacity, lbs. | Magnetic Properties | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Phosphate 1060-1090 Spring Steel | |||||||||||
1/8" | 0.106" | 0.02" | 0.165" | 0.015" | Not Rated | 80 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 000000 |
5/32" | 0.135" | 0.02" | 0.205" | 0.015" | Not Rated | 100 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
3/16" | 0.165" | 0.02" | 0.244" | 0.015" | Not Rated | 130 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
7/32" | 0.193" | 0.029" | 0.275" | 0.025" | Rockwell C47 | 260 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
15/64" | 0.208" | 0.029" | 0.295" | 0.025" | Rockwell C47 | 280 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
1/4" | 0.22" | 0.029" | 0.311" | 0.025" | Rockwell C47 | 290 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
9/32" | 0.247" | 0.029" | 0.346" | 0.025" | Rockwell C47 | 330 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
5/16" | 0.276" | 0.029" | 0.376" | 0.025" | Rockwell C47 | 370 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
3/8" | 0.335" | 0.029" | 0.448" | 0.025" | Rockwell C47 | 440 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
13/32" | 0.364" | 0.029" | 0.486" | 0.025" | Rockwell C47 | 480 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
7/16" | 0.393" | 0.029" | 0.517" | 0.025" | Rockwell C47 | 520 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
1/2" | 0.45" | 0.039" | 0.581" | 0.035" | Rockwell C47 | 840 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 00000 |
9/16" | 0.507" | 0.039" | 0.653" | 0.035" | Rockwell C47 | 940 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 00000 |
5/8" | 0.563" | 0.039" | 0.715" | 0.035" | Rockwell C47 | 1,040 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 00000 |
11/16" | 0.619" | 0.046" | 0.784" | 0.042" | Rockwell C47 | 1,720 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 00000 |
3/4" | 0.676" | 0.046" | 0.845" | 0.042" | Rockwell C47 | 1,870 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
13/16" | 0.732" | 0.046" | 0.915" | 0.042" | Rockwell C47 | 2,040 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
7/8" | 0.789" | 0.046" | 0.991" | 0.042" | Rockwell C47 | 2,200 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
15/16" | 0.843" | 0.046" | 1.058" | 0.042" | Rockwell C47 | 2,350 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 00000 |
1" | 0.9" | 0.046" | 1.13" | 0.042" | Rockwell C47 | 2,510 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
1 1/8" | 1.013" | 0.056" | 1.267" | 0.05" | Rockwell C47 | 3,370 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 00000 |
1 1/4" | 1.126" | 0.056" | 1.415" | 0.05" | Rockwell C47 | 3,730 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 00000 |
1 3/8" | 1.237" | 0.056" | 1.555" | 0.05" | Rockwell C47 | 4,110 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 1/2" | 1.35" | 0.056" | 1.691" | 0.05" | Rockwell C47 | 4,480 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 5/8" | 1.483" | 0.068" | 1.853" | 0.062" | Rockwell C47 | 5,500 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
1 3/4" | 1.576" | 0.068" | 1.975" | 0.062" | Rockwell C47 | 6,520 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
2" | 1.8" | 0.068" | 2.257" | 0.062" | Rockwell C47 | 7,410 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
Zinc Yellow-Chromate-Plated 1060-1090 Spring Steel | |||||||||||
1/8" | 0.106" | 0.02" | 0.165" | 0.015" | Not Rated | 80 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
5/32" | 0.135" | 0.02" | 0.205" | 0.015" | Not Rated | 100 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 0000 |
3/16" | 0.165" | 0.02" | 0.244" | 0.015" | Not Rated | 130 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 0000 |
7/32" | 0.193" | 0.029" | 0.275" | 0.025" | Rockwell C47 | 260 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
15/64" | 0.208" | 0.029" | 0.295" | 0.027" | Rockwell C47 | 280 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
1/4" | 0.22" | 0.029" | 0.311" | 0.025" | Rockwell C47 | 290 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 0000 |
9/32" | 0.247" | 0.029" | 0.346" | 0.025" | Rockwell C47 | 330 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
5/16" | 0.276" | 0.029" | 0.376" | 0.025" | Rockwell C47 | 370 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
3/8" | 0.335" | 0.029" | 0.448" | 0.025" | Rockwell C47 | 440 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
13/32" | 0.364" | 0.029" | 0.486" | 0.027" | Rockwell C47 | 480 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
7/16" | 0.393" | 0.029" | 0.517" | 0.025" | Rockwell C47 | 520 | Magnetic | ASME B18.27.2 | 100 | 000000000 | 00000 |
1/2" | 0.45" | 0.039" | 0.581" | 0.035" | Rockwell C47 | 840 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
9/16" | 0.507" | 0.039" | 0.653" | 0.035" | Rockwell C47 | 940 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
5/8" | 0.563" | 0.039" | 0.715" | 0.035" | Rockwell C47 | 1,040 | Magnetic | ASME B18.27.2 | 50 | 000000000 | 0000 |
11/16" | 0.619" | 0.046" | 0.784" | 0.042" | Rockwell C47 | 1,720 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
3/4" | 0.676" | 0.046" | 0.845" | 0.042" | Rockwell C47 | 1,870 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
13/16" | 0.732" | 0.046" | 0.915" | 0.042" | Rockwell C47 | 2,040 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
7/8" | 0.789" | 0.046" | 0.991" | 0.042" | Rockwell C47 | 2,200 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
15/16" | 0.843" | 0.046" | 1.058" | 0.042" | Rockwell C47 | 2,350 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1" | 0.9" | 0.046" | 1.13" | 0.042" | Rockwell C47 | 2,510 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 1/8" | 1.013" | 0.056" | 1.267" | 0.05" | Rockwell C47 | 3,370 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 1/4" | 1.126" | 0.056" | 1.415" | 0.05" | Rockwell C47 | 3,730 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 3/8" | 1.237" | 0.056" | 1.555" | 0.05" | Rockwell C47 | 4,110 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 1/2" | 1.35" | 0.056" | 1.691" | 0.05" | Rockwell C47 | 4,480 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
1 5/8" | 1.483" | 0.068" | 1.853" | 0.062" | Rockwell C47 | 5,500 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
1 3/4" | 1.576" | 0.068" | 1.975" | 0.062" | Rockwell C47 | 6,520 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
2" | 1.8" | 0.068" | 2.257" | 0.062" | Rockwell C47 | 7,410 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
15-7 PH Stainless Steel | |||||||||||
1/8" | 0.106" | 0.02" | 0.165" | 0.015" | Not Rated | 80 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
5/32" | 0.135" | 0.02" | 0.205" | 0.015" | Not Rated | 100 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
3/16" | 0.165" | 0.02" | 0.244" | 0.015" | Not Rated | 130 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
7/32" | 0.193" | 0.029" | 0.275" | 0.025" | Rockwell C43 | 260 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
15/64" | 0.208" | 0.029" | 0.295" | 0.025" | Rockwell C44 | 280 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
1/4" | 0.22" | 0.029" | 0.311" | 0.025" | Rockwell C43 | 290 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
9/32" | 0.247" | 0.029" | 0.346" | 0.025" | Rockwell C43 | 330 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
5/16" | 0.276" | 0.029" | 0.376" | 0.025" | Rockwell C43 | 370 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
3/8" | 0.335" | 0.029" | 0.448" | 0.025" | Rockwell C43 | 440 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
13/32" | 0.364" | 0.029" | 0.486" | 0.025" | Rockwell C44 | 480 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 0000 |
7/16" | 0.393" | 0.029" | 0.517" | 0.025" | Rockwell C43 | 520 | Magnetic | ASME B18.27.2 | 25 | 000000000 | 00000 |
1/2" | 0.45" | 0.039" | 0.581" | 0.035" | Rockwell C43 | 840 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
9/16" | 0.507" | 0.039" | 0.653" | 0.035" | Rockwell C43 | 940 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
5/8" | 0.563" | 0.039" | 0.715" | 0.035" | Rockwell C43 | 1,040 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
11/16" | 0.619" | 0.046" | 0.784" | 0.042" | Rockwell C43 | 1,720 | Magnetic | ASME B18.27.2 | 10 | 000000000 | 0000 |
3/4" | 0.676" | 0.046" | 0.845" | 0.042" | Rockwell C43 | 1,870 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
13/16" | 0.732" | 0.046" | 0.915" | 0.042" | Rockwell C43 | 2,040 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
7/8" | 0.789" | 0.046" | 0.991" | 0.042" | Rockwell C43 | 2,200 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 0000 |
15/16" | 0.843" | 0.046" | 1.058" | 0.042" | Rockwell C43 | 2,350 | Magnetic | ASME B18.27.2 | 5 | 000000000 | 00000 |
1" | 0.9" | 0.046" | 1.13" | 0.042" | Rockwell C43 | 2,510 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 0000 |
1 1/8" | 1.013" | 0.056" | 1.267" | 0.05" | Rockwell C43 | 3,370 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 0000 |
1 1/4" | 1.126" | 0.056" | 1.415" | 0.05" | Rockwell C43 | 3,730 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 0000 |
1 3/8" | 1.237" | 0.056" | 1.555" | 0.05" | Rockwell C44 | 4,110 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 00000 |
1 1/2" | 1.35" | 0.056" | 1.691" | 0.05" | Rockwell C43 | 4,480 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 0000 |
1 5/8" | 1.483" | 0.068" | 1.853" | 0.062" | Rockwell C44 | 5,500 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 00000 |
1 3/4" | 1.576" | 0.068" | 1.975" | 0.062" | Rockwell C44 | 6,520 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 0000 |
2" | 1.8" | 0.068" | 2.257" | 0.062" | Rockwell C44 | 7,410 | Magnetic | ASME B18.27.2 | 1 | 000000000 | 00000 |
For Groove | ||||||||||
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For OD, mm | Dia., mm | Wd., mm | OD, mm | Thick., mm | Min. Hardness | Thrust Load Capacity, lbs. | Magnetic Properties | Pkg. Qty. | Pkg. | |
Black-Phosphate 1060-1090 Spring Steel | ||||||||||
4 | 3.2 | 0.44 | 5 | 0.4 | Rockwell C48 | 110 | Magnetic | 100 | 000000000 | 00000 |
5 | 4 | 0.64 | 6.2 | 0.6 | Rockwell C48 | 240 | Magnetic | 100 | 000000000 | 0000 |
6 | 5 | 0.74 | 7.4 | 0.7 | Rockwell C48 | 370 | Magnetic | 100 | 000000000 | 0000 |
7 | 6 | 0.85 | 8.6 | 0.8 | Rockwell C48 | 490 | Magnetic | 50 | 000000000 | 0000 |
8 | 7 | 0.85 | 10 | 0.8 | Rockwell C48 | 490 | Magnetic | 50 | 000000000 | 0000 |
9 | 8 | 1.1 | 11.2 | 1 | Rockwell C48 | 780 | Magnetic | 50 | 000000000 | 0000 |
10 | 9 | 1.1 | 12.15 | 1 | Rockwell C48 | 830 | Magnetic | 50 | 000000000 | 0000 |
11 | 10 | 1.1 | 13.2 | 1 | Rockwell C48 | 890 | Magnetic | 25 | 000000000 | 0000 |
12 | 10.9 | 1.1 | 14.35 | 1 | Rockwell C48 | 940 | Magnetic | 50 | 000000000 | 0000 |
13 | 11.8 | 1.1 | 15.4 | 1 | Rockwell C48 | 1,010 | Magnetic | 25 | 000000000 | 0000 |
14 | 12.7 | 1.1 | 16.3 | 1 | Rockwell C48 | 1,120 | Magnetic | 25 | 000000000 | 0000 |
15 | 13.6 | 1.1 | 17.4 | 1 | Rockwell C48 | 1,230 | Magnetic | 25 | 000000000 | 0000 |
16 | 14.5 | 1.1 | 18.5 | 1 | Rockwell C48 | 1,300 | Magnetic | 25 | 000000000 | 0000 |
17 | 15.4 | 1.1 | 19.4 | 1 | Rockwell C48 | 1,340 | Magnetic | 10 | 000000000 | 0000 |
18 | 16.3 | 1.3 | 20.4 | 1.2 | Rockwell C48 | 1,910 | Magnetic | 25 | 000000000 | 0000 |
19 | 17.2 | 1.3 | 21.5 | 1.2 | Rockwell C48 | 2,020 | Magnetic | 10 | 000000000 | 0000 |
20 | 18.1 | 1.3 | 22.65 | 1.2 | Rockwell C48 | 2,110 | Magnetic | 25 | 000000000 | 0000 |
22 | 19.9 | 1.3 | 25 | 1.2 | Rockwell C48 | 2,240 | Magnetic | 50 | 000000000 | 00000 |
25 | 22.6 | 1.3 | 28.3 | 1.2 | Rockwell C48 | 2,580 | Magnetic | 25 | 000000000 | 00000 |
26 | 23.5 | 1.3 | 29.4 | 1.2 | Rockwell C48 | 2,690 | Magnetic | 25 | 000000000 | 00000 |
40 | 36 | 1.85 | 45 | 1.75 | Rockwell C48 | 6,180 | Magnetic | 5 | 000000000 | 0000 |
15-7 PH Stainless Steel | ||||||||||
4 | 3.2 | 0.44 | 5 | 0.4 | Rockwell C44 | 110 | Magnetic | 25 | 000000000 | 00000 |
5 | 4 | 0.64 | 6.2 | 0.6 | Rockwell C44 | 240 | Magnetic | 25 | 000000000 | 00000 |
14 | 12.7 | 1.1 | 16.3 | 1 | Rockwell C44 | 1,120 | Magnetic | 5 | 000000000 | 0000 |
17 | 15.4 | 1.1 | 19.4 | 1 | Rockwell C44 | 1,340 | Magnetic | 5 | 000000000 | 00000 |
DIN 1.4122 Stainless Steel | ||||||||||
6 | 5 | 0.74 | 7.4 | 0.7 | Rockwell C47 | 370 | Magnetic | 25 | 000000000 | 0000 |
7 | 6 | 0.85 | 8.6 | 0.8 | Rockwell C47 | 490 | Magnetic | 25 | 000000000 | 00000 |
8 | 7 | 0.85 | 10 | 0.8 | Rockwell C47 | 490 | Magnetic | 25 | 000000000 | 00000 |
9 | 8 | 1.1 | 11.2 | 1 | Rockwell C47 | 780 | Magnetic | 25 | 000000000 | 00000 |
10 | 9 | 1.1 | 12.15 | 1 | Rockwell C47 | 830 | Magnetic | 10 | 000000000 | 0000 |
11 | 10 | 1.1 | 13.2 | 1 | Rockwell C47 | 890 | Magnetic | 10 | 000000000 | 0000 |
12 | 10.9 | 1.1 | 14.35 | 1 | Rockwell C47 | 940 | Magnetic | 10 | 000000000 | 0000 |
18 | 16.3 | 1.3 | 20.4 | 1.2 | Rockwell C47 | 1,910 | Magnetic | 5 | 000000000 | 0000 |