The Stud,locked in, cataloged under National Stock Number 5307-01-016-2978, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-016-2978 |
| Primary Part Number | 502AS3415-01 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM STUD THREAD IN |
| Style Designator | LOCKED IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC ALL MATERIAL RESPONSES |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Distance From Shoulder Portion to Nut End | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 |
| Shoulder Length | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD 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 |
|---|---|
| 502AS3415-01 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 881BW-5MD1000 | 3/9 Design control — primary reference Stanley Engineered Fastening Llc |
| WS256-4-7-16A | 5/9 Secondary reference Stanley Engineered Fastening Llc |
NSN 5307-01-016-2978 is a Stud,locked in, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-016-2978 has 1 manufacturer part number on file: 502AS3415-01 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 502AS3415-01: Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM NUT THREAD IN; Thread Length: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM STUD THREAD IN; Style Designator: LOCKED IN. 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.