The Stud,self-Locking, cataloged under National Stock Number 5307-00-876-7863, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Viking Technologies, Ltd.. Government technical data includes 14 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5307-00-876-7863 |
| Primary Part Number | NCS4S2-12 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Viking Technologies, Ltd. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | SELF-LOCKING |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.112 INCHES NUT THREAD IN |
| Head Length | 0.053 INCHES MINIMUM AND 0.063 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 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 |
|---|---|
| NCS4S2-12 PRIMARY | Viking Technologies, Ltd. (USA) |
| Reference | Meaning |
|---|---|
| 34S(0.062)-ST-12 | 5/9 Secondary reference U.S. Government activity |
| NCS-4S-2-12 | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
| NCS4S2-12 | 5/9 Secondary reference Dar Electronics Inc Dba National Radio Co |
| 860336-4 | 5/9 Secondary reference Litton Systems Inc. Div Navigation Systems Division |
| 7118964-1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 860336-4 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 7118964-1 | 5/9 Secondary reference Litton Systems Inc Guidance and Control Systems Div |
| NCS4S2-12 | 5/9 Secondary reference Pics Screw Machine, Inc. Dba Pics Screw Machine Inc |
NSN 5307-00-876-7863 is a Stud,self-Locking, manufactured by Viking Technologies, Ltd., classified under FSC 5307, Studs. Status: active.
NSN 5307-00-876-7863 has 1 manufacturer part number on file: NCS4S2-12 (Viking Technologies, Ltd.).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-691-6510. Verify interchangeability with system specifications before substitution.
Key specifications for NCS4S2-12: Surface Treatment Document and Classification: MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM NUT THREAD IN; Style Designator: SELF-LOCKING; Overall Length: 0.413 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN. 14 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.