The Ring,retaining, cataloged under National Stock Number 5325-00-803-9974, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5325-00-803-9974 |
| Primary Part Number | 25501488 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales |
| Status | CANCELLED |
| Material Hardness Rating | 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Material Document and Classification | FED-STD-66 NO. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.078 INCHES NOMINAL IN |
| Inside Diameter | 2.197 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | EXTERNAL |
| Material | STEEL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 25501488 | Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales (AUS) |
| Reference | Meaning |
|---|---|
| MILR21248 | 4/1 Identification reference U.S. Government activity |
| I-N-237 | 5/9 Secondary reference Eaton Corp Engineered Fasteners Div |
| 97AX289 | 5/9 Secondary reference Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales |
| MS16624-237 | 2/2 Government specification standardization U.S. Government activity |
| RST237 | 5/9 Secondary reference Spir-O-Lok Inc |
| 25501488 | 5/2 Secondary reference U.S. Government activity |
| 97AX289 | 5/9 Secondary reference U.S. Government activity |
| 5100-237 | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| 3100-237 | 5/9 Secondary reference U.S. Government activity |
| 5100-237 | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 3100-237 | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 643A412-24 | C/1 Advisory reference — outside the item-of-supply concept General Electric Company |
| RSN237 | 5/9 Secondary reference Spir-O-Lok Inc |
| E-N-237 | 5/9 Secondary reference Eaton Corp Engineered Fasteners Div |
NSN 5325-00-803-9974 is a Ring,retaining, manufactured by Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales, classified under FSC 5325, Fastening Devices. Status: cancelled.
NSN 5325-00-803-9974 has 1 manufacturer part number on file: 25501488 (Volvo Group Government Sales Oceani Oceania Volvo Group Government Sales).
2 possible matches (shared part number, not a government interchangeability claim): 5999-01-020-6708, 5325-01-689-7821. Verify interchangeability with system specifications before substitution.
Key specifications for 25501488: Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Material Document and Classification: FED-STD-66 NO. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 9 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.
NSN 5325-00-803-9974 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.