The Stud,self-Locking, cataloged under National Stock Number 5307-01-083-6866, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-083-6866 |
| Primary Part Number | FHS1-4-20-24 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Penn Engineering & Manufacturing Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 1 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 70.0 ROCKWELL B MAXIMUM |
| Style Designator | SELF-LOCKING |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 20 NUT THREAD |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 OR STEEL COMP 303 PLUS X OR STEEL COMP 303CU OR STEEL COMP 303MA |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| Head Diameter | 0.328 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 |
| Part Number | Manufacturer |
|---|---|
| FHS1-4-20-24 PRIMARY | Penn Engineering & Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| 9360997 | 7/1 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| FHS-0420-24 | 5/9 Secondary reference Penn Engineering & Manufacturing Corp |
NSN 5307-01-083-6866 is a Stud,self-Locking, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-083-6866 has 1 manufacturer part number on file: FHS1-4-20-24 (Penn Engineering & Manufacturing Corp).
Key specifications for FHS1-4-20-24: Surface Treatment Document and Classification: QQ-P-416 TYPE 1 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 70.0 ROCKWELL B MAXIMUM; Style Designator: SELF-LOCKING; Overall Length: 1.500 INCHES NOMINAL IN. 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.