The Insert,screw Thread, cataloged under National Stock Number 5325-01-157-6460, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-157-6460 |
| Primary Part Number | MS51831A103L |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Length | 0.437 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Insert Size | 0.500-13 |
| Criticality Code Justification | MATT |
| Style Designator | GROOVED KEYLOCK |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Internal Thread Relief Depth | 0.070 INCHES NOMINAL IN |
| Features Provided | INDIVIDUALLY KEYED |
| Nominal Thread Size | 0.312 INCHES IN |
| Full Internal Thread Length | 0.367 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| MS51831A103L PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS51831A103L | 5/9 Secondary reference U.S. Government activity |
| MS51831A103L | 3/9 Design control — primary reference U.S. Government activity |
NSN 5325-01-157-6460 is a Insert,screw Thread, manufactured by Sae International Dba Sae International, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-157-6460 has 1 manufacturer part number on file: MS51831A103L (Sae International Dba Sae International).
Key specifications for MS51831A103L: Length: 0.437 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Insert Size: 0.500-13; Criticality Code Justification: MATT. 14 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.