The Ring,retaining, cataloged under National Stock Number 5325-00-281-2937, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-281-2937 |
| Primary Part Number | 583033 |
| 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 | EXTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | QQ-S-633,AMEND 2,1065 TO 1090-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Major Thickness | 0.024 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN |
| Inside Diameter | 0.390 INCHES MINIMUM AND 0.397 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | EXTERNAL |
| Surface Treatment | CADMIUM OR DICHROMATE AND ZINC |
| 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 |
|---|---|
| 25704-281220-01-0 | Knds Deutschland Gmbh & Co. Kg - Werk Kassel - (DEU) |
| 583033 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 25704-281220-01-0 | Baainbw Dokumente Ohne Nutzungsrechte Des Baainbw Fur Beschaffungszwecke (DEU) |
| Reference | Meaning |
|---|---|
| 583033 | 5/9 Secondary reference Liebherr-Aerospace Lindenberg Gmbh |
| 5100-43MD0RZD | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 583033 | 5/9 Secondary reference Feinmechanische Werke Mainz Gmbh |
| 5100-43MD0RZD | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
NSN 5325-00-281-2937 is a Ring,retaining, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-281-2937 has 3 manufacturer part numbers on file: 25704-281220-01-0 (Knds Deutschland Gmbh & Co. Kg - Werk Kassel -), 583033 (U S Army Tank Automotive Command Amsta-Im-Mm), 25704-281220-01-0 (Baainbw Dokumente Ohne Nutzungsrechte Des Baainbw Fur Beschaffungszwecke).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-713-9744. Verify interchangeability with system specifications before substitution.
Key specifications for 583033: Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Strength Rating: ERR-060; Material Document and Classification: QQ-S-633,AMEND 2,1065 TO 1090-CANCELED 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.