The Stud,shouldered, cataloged under National Stock Number 5307-01-159-0121, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-159-0121 |
| Primary Part Number | GS21-004-2 |
| Item Name | Stud,shouldered |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-T-10727,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.780 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 1.938 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | QQ-C-530,COND H FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Surface Treatment | TIN OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 16 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | COPPER |
| Distance Across Flats | 0.750 INCHES NOMINAL IN |
| Shoulder Length | 0.375 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| 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 |
|---|---|
| GS21-004-2 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 5307-01-159-0121 is a Stud,shouldered, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-159-0121 has 1 manufacturer part number on file: GS21-004-2 (L3harris Technologies, Inc Div Space & Airborne Systems).
Key specifications for GS21-004-2: Surface Treatment Document and Classification: MIL-T-10727,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.780 INCHES NOMINAL STUD THREAD IN; Thread Length: 1.938 INCHES NOMINAL NUT THREAD IN; Style Designator: SHOULDERED. 19 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.