The Ring,retaining, cataloged under National Stock Number 5325-00-414-7803, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Avtron Aerospace Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-414-7803 |
| Primary Part Number | B8403 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Avtron Aerospace Inc |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Material Diameter | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1117 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 9.780 INCHES NOMINAL IN |
| Inside Diameter | 9.156 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Material | STEEL COMP 1117 |
| 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 |
|---|---|
| B8403 PRIMARY | Avtron Aerospace Inc (USA) |
NSN 5325-00-414-7803 is a Ring,retaining, manufactured by Avtron Aerospace Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-414-7803 has 1 manufacturer part number on file: B8403 (Avtron Aerospace Inc).
Key specifications for B8403: Usage Design: INTERNAL; End Style: 90 DEGREE PARALLEL; Material Diameter: 0.312 INCHES NOMINAL IN; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1117 ASSN STD SINGLE MATERIAL RESPONSE. 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.