The Stud,self-Locking, cataloged under National Stock Number 5307-01-612-5540, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Pem Machine and Tool Co Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 — Studs (FSG 53) |
| Manufacturers | Pem Machine and Tool Co Inc (CAGE 05394); Raytheon Company (CAGE 15090) |
| Parameter | Value |
|---|---|
| NSN | 5307-01-612-5540 |
| Primary Part Number | FHS-M4-20 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Pem Machine and Tool Co Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| FHS-M4-20 PRIMARY | Pem Machine and Tool Co Inc (USA) |
| 7521060-002 | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| 7521060-002 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 5307-01-612-5540 is a Stud,self-Locking, manufactured by Pem Machine and Tool Co Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-612-5540 has 2 manufacturer part numbers on file: FHS-M4-20 (Pem Machine and Tool Co Inc), 7521060-002 (Raytheon Company).
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.