The Ring,retaining, cataloged under National Stock Number 5325-00-282-0726, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Cotta Transmission Co Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-282-0726 |
| Primary Part Number | SX122 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Cotta Transmission Co Llc |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | QQ-S-633 FS1065 TO FS1090 FED SPEC SINGLE MATERIAL RESPONSE OR SAE NO. 1065 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Inside Diameter | 2.172 INCHES MINIMUM AND 2.212 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | EXTERNAL |
| Surface Treatment | CADMIUM |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SX122 | Cotta Transmission Co Llc (USA) |
| NAS51-237 | Electric Machinery Dresser Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| Q0116116 | 5/9 Secondary reference U.S. Government activity |
| 5100-237MF | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 5100-237MF | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| 7581-15-10 | 3/2 Design control — primary reference U.S. Government activity |
| 7581-15-10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-282-0726 is a Ring,retaining, manufactured by Cotta Transmission Co Llc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-282-0726 has 2 manufacturer part numbers on file: SX122 (Cotta Transmission Co Llc), NAS51-237 (Electric Machinery Dresser Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 5820-00-484-3391. Verify interchangeability with system specifications before substitution.
Key specifications for SX122: Usage Design: EXTERNAL; Strength Rating: ERR-060; Material Document and Classification: QQ-S-633 FS1065 TO FS1090 FED SPEC SINGLE MATERIAL RESPONSE OR SAE NO. 1065 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.