The Insert,screw Thread, cataloged under National Stock Number 5325-01-497-4176, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Rolls Royce Corp. Government technical data includes 15 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 | 5325-01-497-4176 |
| Primary Part Number | MS51831CA202L |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Rolls Royce Corp |
| Status | ACTIVE |
| Length | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.305 INCHES NOMINAL IN |
| Insert Size | 0.4375-14 NC-2A A |
| Style Designator | KEYLOCK |
| Material Document and Classification | AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Internal Thread Relief Depth | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Full Internal Thread Length | 0.280 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| MS51831CA202L PRIMARY | Rolls Royce Corp (USA) |
NSN 5325-01-497-4176 is a Insert,screw Thread, manufactured by Rolls Royce Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-497-4176 has 1 manufacturer part number on file: MS51831CA202L (Rolls Royce Corp).
Key specifications for MS51831CA202L: Length: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.305 INCHES NOMINAL IN; Insert Size: 0.4375-14 NC-2A A. 15 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.