The Insert,screw Thread, cataloged under National Stock Number 5325-01-577-5141, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Avk Industries Products Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-577-5141 |
| Primary Part Number | ARS4-518-280 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Avk Industries Products Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | STM-B-633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Surface Treatment | ZINC OVERALL |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1010 OR STEEL COMP 1008 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 | X |
| Part Number | Manufacturer |
|---|---|
| ARS4-518-280 PRIMARY | Avk Industries Products Inc (USA) |
| 3632376 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3632376 | 5/9 Secondary reference Oshkosh Corp |
NSN 5325-01-577-5141 is a Insert,screw Thread, manufactured by Avk Industries Products Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-577-5141 has 2 manufacturer part numbers on file: ARS4-518-280 (Avk Industries Products Inc), 3632376 (Oshkosh Defense Llc).
Key specifications for ARS4-518-280: Surface Treatment Document and Classification: STM-B-633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN; Special Features: 1.200 IN LONG;HEAD DIA. 0.756 IN.;MAX BODY DIA. 0.500 IN.;GRIP RANGE 0.020 - 0.280 IN. IN. 7 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.