The Ring,retaining, cataloged under National Stock Number 5325-00-828-7572, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Thern Inc. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5325-00-828-7572 |
| Primary Part Number | RS175 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Thern Inc |
| Status | CANCELLED |
| Usage Design | EXTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | SAE 1070 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 1.909 INCHES NOMINAL IN |
| Major Thickness | 0.049 INCHES NOMINAL IN |
| Inside Diameter | 1.673 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| 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 |
|---|---|
| RS175 PRIMARY | Thern Inc (USA) |
| 10885484 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| KS175 | 5/2 Secondary reference U.S. Government activity |
| MIL-DTL-27426 | 4/1 Identification reference U.S. Government activity |
| 657-175 | 5/9 Secondary reference Densmore Engineering Co Inc |
| RS-175 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| RS175 | 5/2 Secondary reference U.S. Government activity |
| 5365008287572 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5325-00-828-7572 is a Ring,retaining, manufactured by Thern Inc, classified under FSC 5325, Fastening Devices. Status: cancelled.
NSN 5325-00-828-7572 has 2 manufacturer part numbers on file: RS175 (Thern Inc), 10885484 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-301-3050. Verify interchangeability with system specifications before substitution.
Key specifications for RS175: Usage Design: EXTERNAL; Strength Rating: ERR-060; Material Document and Classification: SAE 1070 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: DOUBLE OVAL. 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.
NSN 5325-00-828-7572 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.