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Military Specification
Retaining Ring Style
Groove Diameter
Retaining Ring Type
Ring ID
System of Measurement
Finish
Specifications Met
Thrust Load Capacity
Passivation
Minimum Hardness
Export Control Classification Number (ECCN)
Magnetic Properties
Mil. Spec. External Retaining Rings
These rings meet military specification MS16624. Open them with retaining ring pliers (sold separately), pass them over the end of a shaft, and release to spring into the groove. Ring ID is measured with the ring uninstalled.
1060-1090 spring steel rings are an economical choice with good strength. The cadmium-plated finish adds some corrosion resistance.
15-7 PH stainless steel rings are high strength with good corrosion resistance. 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For OD | Dia. | Wd. | ID | Thick. | Min. Hardness | Thrust Load Capacity, lbs. | Magnetic Properties | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated 1060-1090 Spring Steel | |||||||||||
| 1/4" | 0.23" | 0.03" | 0.225" | 0.025" | Rockwell C48 | 590 | Magnetic | MS16624 | 25 | 96363A528 | 00000 |
| 5/16" | 0.29" | 0.03" | 0.281" | 0.025" | Rockwell C48 | 750 | Magnetic | MS16624 | 25 | 96363A533 | 0000 |
| 3/8" | 0.352" | 0.03" | 0.338" | 0.025" | Rockwell C48 | 880 | Magnetic | MS16624 | 25 | 96363A540 | 0000 |
| 7/16" | 0.412" | 0.03" | 0.395" | 0.025" | Rockwell C48 | 1,030 | Magnetic | MS16624 | 25 | 96363A546 | 0000 |
| 1/2" | 0.468" | 0.04" | 0.461" | 0.035" | Rockwell C48 | 1,670 | Magnetic | MS16624 | 25 | 96363A553 | 0000 |
| 9/16" | 0.53" | 0.04" | 0.521" | 0.035" | Rockwell C48 | 1,870 | Magnetic | MS16624 | 25 | 96363A559 | 00000 |
| 5/8" | 0.588" | 0.04" | 0.579" | 0.035" | Rockwell C48 | 2,090 | Magnetic | MS16624 | 25 | 96363A565 | 00000 |
| 11/16" | 0.646" | 0.047" | 0.635" | 0.042" | Rockwell C48 | 3,450 | Magnetic | MS16624 | 25 | 96363A571 | 00000 |
| 3/4" | 0.704" | 0.047" | 0.693" | 0.042" | Rockwell C48 | 3,750 | Magnetic | MS16624 | 25 | 96363A578 | 00000 |
| 13/16" | 0.762" | 0.047" | 0.751" | 0.042" | Rockwell C48 | 4,060 | Magnetic | MS16624 | 10 | 96363A584 | 0000 |
| 7/8" | 0.821" | 0.047" | 0.81" | 0.042" | Rockwell C48 | 4,360 | Magnetic | MS16624 | 10 | 96363A591 | 0000 |
| 15/16" | 0.882" | 0.047" | 0.867" | 0.042" | Rockwell C48 | 4,720 | Magnetic | MS16624 | 10 | 96363A596 | 0000 |
| 1" | 0.94" | 0.047" | 0.925" | 0.042" | Rockwell C48 | 5,020 | Magnetic | MS16624 | 10 | 96363A604 | 0000 |
| 1 1/8" | 1.059" | 0.056" | 1.041" | 0.05" | Rockwell C48 | 6,690 | Magnetic | MS16624 | 1 | 96363A608 | 0000 |
| 1 1/4" | 1.176" | 0.056" | 1.156" | 0.05" | Rockwell C48 | 7,460 | Magnetic | MS16624 | 1 | 96363A629 | 0000 |
| 1 3/8" | 1.291" | 0.056" | 1.272" | 0.05" | Rockwell C48 | 8,220 | Magnetic | MS16624 | 1 | 96363A641 | 0000 |
| 1 1/2" | 1.406" | 0.056" | 1.387" | 0.05" | Rockwell C48 | 8,930 | Magnetic | MS16624 | 1 | 96363A654 | 0000 |
| 1 5/8" | 1.529" | 0.068" | 1.503" | 0.062" | Rockwell C46 | 12,000 | Magnetic | MS16624 | 1 | 96363A667 | 0000 |
| 1 3/4" | 1.65" | 0.068" | 1.618" | 0.062" | Rockwell C46 | 12,900 | Magnetic | MS16624 | 1 | 96363A679 | 0000 |
15-7 PH Stainless Steel  | |||||||||||
| 1/4" | 0.23" | 0.03" | 0.225" | 0.025" | Rockwell C44 | 590 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 10 | 95304A226 | 00000 |
| 5/16" | 0.29" | 0.03" | 0.281" | 0.025" | Rockwell C44 | 750 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 10 | 95304A232 | 00000 |
| 3/8" | 0.352" | 0.03" | 0.338" | 0.025" | Rockwell C44 | 880 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 10 | 95304A238 | 00000 |
| 7/16" | 0.412" | 0.03" | 0.395" | 0.025" | Rockwell C44 | 1,030 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A244 | 0000 |
| 1/2" | 0.468" | 0.04" | 0.461" | 0.035" | Rockwell C44 | 1,670 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A251 | 0000 |
| 9/16" | 0.53" | 0.04" | 0.521" | 0.035" | Rockwell C44 | 1,870 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A257 | 0000 |
| 5/8" | 0.588" | 0.04" | 0.579" | 0.035" | Rockwell C44 | 2,090 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A263 | 0000 |
| 11/16" | 0.646" | 0.047" | 0.635" | 0.042" | Rockwell C44 | 3,450 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A269 | 0000 |
| 3/4" | 0.704" | 0.047" | 0.693" | 0.042" | Rockwell C44 | 3,750 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A276 | 00000 |
| 13/16" | 0.762" | 0.047" | 0.751" | 0.042" | Rockwell C44 | 4,060 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A282 | 00000 |
| 7/8" | 0.821" | 0.047" | 0.81" | 0.042" | Rockwell C44 | 4,360 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A288 | 00000 |
| 15/16" | 0.882" | 0.047" | 0.867" | 0.042" | Rockwell C44 | 4,720 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A294 | 00000 |
| 1" | 0.94" | 0.047" | 0.925" | 0.042" | Rockwell C44 | 5,020 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 5 | 95304A302 | 00000 |
| 1 1/8" | 1.059" | 0.056" | 1.041" | 0.05" | Rockwell C44 | 6,690 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 1 | 95304A314 | 0000 |
| 1 1/4" | 1.176" | 0.056" | 1.156" | 0.05" | Rockwell C44 | 7,460 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 1 | 95304A327 | 0000 |
| 1 3/8" | 1.291" | 0.056" | 1.272" | 0.05" | Rockwell C44 | 8,220 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 1 | 95304A339 | 0000 |
| 1 1/2" | 1.406" | 0.056" | 1.387" | 0.05" | Rockwell C44 | 8,930 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 1 | 95304A352 | 0000 |
| 1 5/8" | 1.529" | 0.068" | 1.503" | 0.062" | Rockwell C44 | 12,000 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 1 | 95304A364 | 0000 |
| 1 3/4" | 1.65" | 0.068" | 1.618" | 0.062" | Rockwell C44 | 12,900 | Magnetic | Fed. Spec. QQ-P-35, MS16624 | 1 | 95304A377 | 00000 |