The Ring,retaining, cataloged under National Stock Number 5325-01-174-3262, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-174-3262 |
| Primary Part Number | ST9M449-331 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Strength Rating | ERR-060 |
| Material Document and Classification | SAE 1070 ASSN STD 1ST MATERIAL RESPONSE OR SAE 1074 ASSN STD 2ND MATERIAL RESPONSE OR SAE 1078 ASSN STD 3RD MATERIAL RESPONSE OR SAE 1080 ASSN STD 4TH MATERIAL RESPONSE OR SAE 1084 ASSN STD 5TH MATERIAL RESPONSE OR SAE 1085 ASSN STD 6TH MATERIAL RESPONSE OR SAE 1086 ASSN STD 7TH MATERIAL RESPONSE OR SAE 1090 ASSN STD 8TH MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 3.440 INCHES MINIMUM AND 3.470 INCHES MAXIMUM IN |
| Major Thickness | 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Inside Diameter | 3.074 INCHES MINIMUM AND 3.084 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL |
| Surface Treatment | CADMIUM AND CHROMATE |
| Material | STEEL COMP 1070 OR STEEL COMP 1074 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1084 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090 |
| 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 |
|---|---|
| ST9M449-331 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| UR-331CD-M9 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-174-3262 is a Ring,retaining, manufactured by The Boeing Company Div Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-174-3262 has 1 manufacturer part number on file: ST9M449-331 (The Boeing Company Div Defense).
Key specifications for ST9M449-331: Usage Design: INTERNAL; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE; Strength Rating: ERR-060; Material Document and Classification: SAE 1070 ASSN STD 1ST MATERIAL RESPONSE OR SAE 1074 ASSN STD 2ND MATERIAL RESPONSE OR SAE 1078 ASSN STD 3RD MATERIAL RESPONSE OR SAE 1080 ASSN STD 4TH MATERIAL RESPONSE OR SAE 1084 ASSN STD 5TH MATERIAL RESPONSE OR SAE 1085 ASSN STD 6TH MATERIAL RESPONSE OR SAE 1086 ASSN STD 7TH MATERIAL RESPONSE OR SAE 1090 ASSN STD 8TH 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.