The Stud,self-Locking, cataloged under National Stock Number 5307-01-601-7531, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-601-7531 |
| Primary Part Number | FH-M6-20-ZI |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Penn Engineering & Manufacturing Corp |
| Status | ACTIVE |
| Thread Tolerance Class | B1.13M,6G EXTERNAL STUD THREAD G |
| Thread Pitch in Millimeters | 1.0 STUD THREAD |
| Thread Length | 16.6 MILLIMETERS MINIMUM AND 17.4 MILLIMETERS MAXIMUM STUD THREAD MM |
| Style Designator | SELF-LOCKING |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Nominal Thread Size | 6.0 MILLIMETERS STUD THREAD MM |
| Head Length | 3.0 MILLIMETERS MAXIMUM MM |
| Locking Feature | SELF-CLINCHING HEAD |
| Serration Quantity | 12 |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL |
| Thread Series Designator | M STUD THREAD |
| Head Diameter | 7.8 MILLIMETERS MINIMUM AND 8.6 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| FH-M6-20-ZI PRIMARY | Penn Engineering & Manufacturing Corp (USA) |
| HC1344A00 | Ineo Defense (FRA) |
NSN 5307-01-601-7531 is a Stud,self-Locking, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-601-7531 has 2 manufacturer part numbers on file: FH-M6-20-ZI (Penn Engineering & Manufacturing Corp), HC1344A00 (Ineo Defense).
Key specifications for FH-M6-20-ZI: Thread Tolerance Class: B1.13M,6G EXTERNAL STUD THREAD G; Thread Pitch in Millimeters: 1.0 STUD THREAD; Thread Length: 16.6 MILLIMETERS MINIMUM AND 17.4 MILLIMETERS MAXIMUM STUD THREAD MM; Style Designator: SELF-LOCKING. 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.