The Ring,retaining, cataloged under National Stock Number 5325-01-478-1637, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Sealtite Corp Div Sealtite Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-478-1637 |
| Primary Part Number | 9M187C62 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Sealtite Corp Div Sealtite Corporation |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Strength Rating | ERR-060 |
| Criticality Code Justification | AGAV |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 302 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30302 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 0.700 INCHES NOMINAL IN |
| Major Thickness | 0.035 INCHES NOMINAL IN |
| Inside Diameter | 0.590 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 302 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 9M187C62 | The Boeing Company Div Defense (USA) |
| 9M187C62 PRIMARY | Sealtite Corp Div Sealtite Corporation (USA) |
| 9M187C62 PRIMARY | Smalley Steel Ring Co. (USA) |
| Reference | Meaning |
|---|---|
| 9M187C62 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-478-1637 is a Ring,retaining, manufactured by Sealtite Corp Div Sealtite Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-478-1637 has 3 manufacturer part numbers on file: 9M187C62 (The Boeing Company Div Defense), 9M187C62 (Sealtite Corp Div Sealtite Corporation), 9M187C62 (Smalley Steel Ring Co.).
Key specifications for 9M187C62: Usage Design: EXTERNAL; Strength Rating: ERR-060; Criticality Code Justification: AGAV; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 302 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30302 ASSN STD SINGLE MATERIAL RESPONSE. 12 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.