The Ring,retaining, cataloged under National Stock Number 5325-00-281-2954, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-281-2954 |
| Primary Part Number | 7725548 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Material Hardness Rating | 47.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM |
| Usage Design | INTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | QQ-S-633 AMEND. 2, FS 1065 OR FS 1090 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.872 INCHES MINIMUM AND 0.887 INCHES MAXIMUM IN |
| Major Thickness | 0.040 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Surface Treatment | CADMIUM OR ZINC |
| Material | STEEL COMP 1065 OR STEEL COMP 1090 |
| 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 |
|---|---|
| 7725548 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 6763670 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 6763670 PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 913442 | 3/9 Design control — primary reference Sasco Inc Canadian Div |
| N5000-81MF0RZF | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 825T5 | 5/9 Secondary reference Diamond Reo Truck Co |
| N5000-81MF0RZF | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
NSN 5325-00-281-2954 is a Ring,retaining, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-281-2954 has 3 manufacturer part numbers on file: 7725548 (U S Army Tank Automotive Command Amsta-Im-Mm), 6763670 (Allison Transmission Inc Dba Allison Transmission, Inc), 6763670 (General Motors Corp).
3 possible matches (shared part number, not a government interchangeability claim): 5310-00-587-1441, 6230-00-892-5253, 5970-01-020-3418. Verify interchangeability with system specifications before substitution.
Key specifications for 7725548: Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM; Usage Design: INTERNAL; Strength Rating: ERR-060; Material Document and Classification: QQ-S-633 AMEND. 2, FS 1065 OR FS 1090 FED SPEC SINGLE MATERIAL RESPONSE. 11 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.