The Insert,screw Thread, cataloged under National Stock Number 5325-01-173-3916, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Eaton Limited. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-173-3916 |
| Primary Part Number | 991-4-00085-001 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Eaton Limited |
| Status | ACTIVE |
| Length | 1.570 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Insert Size | 0.805 IN. MIN,0.845 IN. MAX DIA IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.500 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4130 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 991-4-00085-001 | Eaton Limited (GBR) |
| AS6734-1 | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS6734-1 | 5/9 Secondary reference Society of British Aerospace Companies Ltd (sbac) |
| SR9284R8H | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-173-3916 is a Insert,screw Thread, manufactured by Eaton Limited, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-173-3916 has 2 manufacturer part numbers on file: 991-4-00085-001 (Eaton Limited), AS6734-1 (Sae International Dba Sae International).
Key specifications for 991-4-00085-001: Length: 1.570 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Insert Size: 0.805 IN. MIN,0.845 IN. MAX DIA IN; Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.