The Ring,retaining, cataloged under National Stock Number 5325-00-559-3897, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Komatsu America Corp.. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-559-3897 |
| Primary Part Number | 136366H1 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Komatsu America Corp. |
| Status | ACTIVE |
| Material Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.763 INCHES NOMINAL IN |
| Major Thickness | 0.055 INCHES NOMINAL IN |
| Inside Diameter | 0.653 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| 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 |
|---|---|
| 136366H1 | Komatsu America Corp. (USA) |
| 136366H1 | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 136366H1 | 5/9 Secondary reference Komatsu American Intl Co |
| 3113 | 3/2 Design control — primary reference U.S. Government activity |
| 136366 | 5/9 Secondary reference Komatsu American Intl Co |
| XSC128 | 5/9 Secondary reference Mellowes Co Div of Charter Mfg Co Inc |
NSN 5325-00-559-3897 is a Ring,retaining, manufactured by Komatsu America Corp., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-559-3897 has 2 manufacturer part numbers on file: 136366H1 (Komatsu America Corp.), 136366H1 (Dressta North America Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-577-7409. Verify interchangeability with system specifications before substitution.
Key specifications for 136366H1: Material Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; End Style: 90 DEGREE PARALLEL; 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.