The Insert,screw Thread, cataloged under National Stock Number 5325-01-058-4501, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Information & Electronic Systems Integration Inc.. Government technical data includes 9 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 | 5325-01-058-4501 |
| Primary Part Number | 135681-0001 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Bae Systems Information & Electronic Systems Integration Inc. |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Length | 0.440 INCHES NOMINAL IN |
| Flange Thickness | 0.190 INCHES NOMINAL IN |
| Insert Size | 0.250-20 UNC 2A A |
| Style Designator | FLANGE |
| Nominal Thread Size | 0.164 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 135681-0001 PRIMARY | Bae Systems Information & Electronic Systems Integration Inc. (USA) |
NSN 5325-01-058-4501 is a Insert,screw Thread, manufactured by Bae Systems Information & Electronic Systems Integration Inc., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-058-4501 has 1 manufacturer part number on file: 135681-0001 (Bae Systems Information & Electronic Systems Integration Inc.).
Key specifications for 135681-0001: Width Across Flats: 0.375 INCHES NOMINAL IN; Length: 0.440 INCHES NOMINAL IN; Flange Thickness: 0.190 INCHES NOMINAL IN; Insert Size: 0.250-20 UNC 2A A. 9 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.