The Stud,self-Locking, cataloged under National Stock Number 5307-00-421-5071, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Pics Screw Machine, Inc. Dba Pics Screw Machine Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-421-5071 |
| Primary Part Number | NCS4-4-8 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Pics Screw Machine, Inc. Dba Pics Screw Machine Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | SELF-LOCKING |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.112 INCHES NUT THREAD IN |
| Head Length | 0.112 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN |
| Locking Feature | ANY ACCEPTABLE |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 40 NUT THREAD |
| Material | STEEL COMP 303 |
| Distance Across Flats | 0.250 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| Head Diameter | 0.197 INCHES MINIMUM AND 0.201 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 |
|---|---|
| NCS4-4-8 | Pics Screw Machine, Inc. Dba Pics Screw Machine Inc (USA) |
| 132544A048 | L3harris Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 132544A048 | 5/9 Secondary reference Itt Industries Inc Itt Aerospace Communications Div East |
| 950278-71 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 610073P54 | 7/2 Vendor item drawing reference U.S. Government activity |
| NCS4-4-8 | 3/9 Design control — primary reference Dar Electronics Inc Dba National Radio Co |
| 44S(0.125)-ST-8 | 5/9 Secondary reference U.S. Government activity |
| NCS-4-4-8 | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
NSN 5307-00-421-5071 is a Stud,self-Locking, manufactured by Pics Screw Machine, Inc. Dba Pics Screw Machine Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-421-5071 has 2 manufacturer part numbers on file: NCS4-4-8 (Pics Screw Machine, Inc. Dba Pics Screw Machine Inc), 132544A048 (L3harris Technologies, Inc.).
Key specifications for NCS4-4-8: Surface Treatment Document and Classification: MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM NUT THREAD IN; Style Designator: SELF-LOCKING; Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE. 15 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.