The Ring,retaining, cataloged under National Stock Number 5325-00-944-8277, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-944-8277 |
| Primary Part Number | RS437C |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Material Document and Classification | SAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 4.624 INCHES MINIMUM AND 4.664 INCHES MAXIMUM IN |
| Major Thickness | 0.058 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Inside Diameter | 4.168 INCHES MINIMUM AND 4.208 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Surface Treatment | CADMIUM |
| 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 |
|---|---|
| RS437C | Smalley Steel Ring Co. (USA) |
| 69984-437P | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| WS-437-CA | 5/1 Secondary reference Smalley Steel Ring Co. |
| RS437C | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-944-8277 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-944-8277 has 2 manufacturer part numbers on file: RS437C (Smalley Steel Ring Co.), 69984-437P (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for RS437C: Usage Design: EXTERNAL; Material Document and Classification: SAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 4.624 INCHES MINIMUM AND 4.664 INCHES MAXIMUM IN. 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.