The Stud,self-Locking, cataloged under National Stock Number 5307-00-961-2001, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-961-2001 |
| Primary Part Number | NCS4S2-8 |
| 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 | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM NUT THREAD IN |
| Style Designator | SELF-LOCKING |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL COMP 304 OR STEEL COMP 304L |
| Distance Across Flats | 0.438 INCHES NOMINAL IN |
| Thread Series Designator | UNF NUT THREAD |
| Head Diameter | 0.380 INCHES MINIMUM AND 0.384 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 |
|---|---|
| NCS4S2-8 PRIMARY | Viking Technologies, Ltd. (USA) |
| Reference | Meaning |
|---|---|
| 34S(0.062)-ST-8 | 5/9 Secondary reference U.S. Government activity |
| NCS4S2-8 | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
| 860336-2 | 5/9 Secondary reference Litton Systems Inc. Div Navigation Systems Division |
NSN 5307-00-961-2001 is a Stud,self-Locking, manufactured by Viking Technologies, Ltd., classified under FSC 5307, Studs. Status: active.
NSN 5307-00-961-2001 has 1 manufacturer part number on file: NCS4S2-8 (Viking Technologies, Ltd.).
2 possible matches (shared part number, not a government interchangeability claim): 5307-01-185-7320, 2530-01-687-7980. Verify interchangeability with system specifications before substitution.
Key specifications for NCS4S2-8: Surface Treatment Document and Classification: MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM NUT THREAD IN; Style Designator: SELF-LOCKING; Nominal Thread Size: 0.250 INCHES NUT THREAD IN. 10 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.