The Stud,self-Locking, cataloged under National Stock Number 5307-00-431-7448, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Ipsen, Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-431-7448 |
| Primary Part Number | 4CHC-440-4 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Ipsen, Inc |
| Status | ACTIVE |
| Thread Length | 0.188 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SELF-LOCKING |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.112 INCHES NUT THREAD IN |
| Head Length | 0.078 INCHES MAXIMUM IN |
| Locking Feature | SELF-CLINCHING HEAD |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 40 NUT THREAD |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| Head Diameter | 0.171 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 |
|---|---|
| 4CHC-440-4 | Ipsen, Inc (USA) |
| Reference | Meaning |
|---|---|
| 134BSTKS-8 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5307-00-431-7448 is a Stud,self-Locking, manufactured by Ipsen, Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-431-7448 has 1 manufacturer part number on file: 4CHC-440-4 (Ipsen, Inc).
Key specifications for 4CHC-440-4: Thread Length: 0.188 INCHES NOMINAL NUT THREAD IN; Style Designator: SELF-LOCKING; Overall Length: 0.328 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND NUT THREAD. 12 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.