The Stud,self-Locking, cataloged under National Stock Number 5307-01-146-5545, 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 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-146-5545 |
| Primary Part Number | FHS-440-6 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Penn Engineering & Manufacturing Corp |
| Status | ACTIVE |
| Thread Length | 0.350 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Style Designator | SELF-LOCKING |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.112 INCHES NUT THREAD IN |
| Head Length | 0.025 INCHES NOMINAL IN |
| Locking Feature | HEAD SERRATIONS |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 4 NUT THREAD |
| Material | STEEL COMP 305 |
| Thread Series Designator | UN NUT THREAD |
| Head Diameter | 0.1718 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5307-01-146-5545 is a Stud,self-Locking, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-146-5545 has 3 manufacturer part numbers on file: 163320-01 (Ge Aviation Systems Llc), FHS-440-6 (Penn Engineering & Manufacturing Corp), 216702-3 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products).
1 possible match (shared part number, not a government interchangeability claim): 5307-01-188-0391. Verify interchangeability with system specifications before substitution.
Key specifications for FHS-440-6: Thread Length: 0.350 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Style Designator: SELF-LOCKING; Overall Length: 0.375 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND NUT THREAD. 11 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.