The Ring,retaining, cataloged under National Stock Number 5325-01-187-9772, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-187-9772 |
| Primary Part Number | HS7008-27 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Material Hardness Rating | 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| Material Diameter | 1.2 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 24.9 MILLIMETERS NOMINAL MM |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | EXTERNAL |
| Surface Treatment | PHOSPHATE |
| 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 |
|---|---|
| DIN 471-27X1.2 | Metric and Multistandard Components Corp (USA) |
| OSS7008-27 | Northrop Grumman Systems Corp Div Weapon System (USA) |
| HS7008-27 PRIMARY | The Boeing Company (USA) |
| DIN471-27X1.2 | Din Deutsches Institut Fur Normung Ev (DEU) |
| HS7008-27 | Metric and Multistandard Components Corp (USA) |
| Reference | Meaning |
|---|---|
| HS7008-27 | D/9 Drawing number reference only Mcdonnell Douglas Helicopter Co Inc |
| OSS7008-27 | 5/9 Secondary reference Alliant Techsystems Operations Llc |
NSN 5325-01-187-9772 is a Ring,retaining, manufactured by The Boeing Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-187-9772 has 5 manufacturer part numbers on file: DIN 471-27X1.2 (Metric and Multistandard Components Corp), OSS7008-27 (Northrop Grumman Systems Corp Div Weapon System), HS7008-27 (The Boeing Company), DIN471-27X1.2 (Din Deutsches Institut Fur Normung Ev), HS7008-27 (Metric and Multistandard Components Corp).
Key specifications for HS7008-27: Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; Material Diameter: 1.2 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: ROUND. 9 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.