The Stud,self-Locking, cataloged under National Stock Number 5307-01-690-0669, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Penn Engineering & Manufacturing Corp. Government technical data includes 13 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 | 5307-01-690-0669 |
| Primary Part Number | HFHS-0616-16 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Penn Engineering & Manufacturing Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.0845 INCHES NOMINAL STUD THREAD IN |
| Style Designator | SELF-LOCKING |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Head Length | 0.085 INCHES MAXIMUM IN |
| Locking Feature | GRIPPING PRONGS |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Head Diameter | 0.579 INCHES MINIMUM AND 0.581 INCHES MAXIMUM IN |
| 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 |
|---|---|
| HFHS-0616-16 PRIMARY | Penn Engineering & Manufacturing Corp (USA) |
NSN 5307-01-690-0669 is a Stud,self-Locking, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-690-0669 has 1 manufacturer part number on file: HFHS-0616-16 (Penn Engineering & Manufacturing Corp).
Key specifications for HFHS-0616-16: Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.0845 INCHES NOMINAL STUD THREAD IN; Style Designator: SELF-LOCKING; Overall Length: 1.085 INCHES NOMINAL IN. 13 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.