The Stud,locked in, cataloged under National Stock Number 5307-01-009-2280, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Stanley Engineered Fastening Llc. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-009-2280 |
| Primary Part Number | WS245-4-6-25 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Stanley Engineered Fastening Llc |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Cotter Pin Hole Diameter | 0.071 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Thread Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 0.330 INCHES NOMINAL 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 |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Locking Feature | RING, LOCK KEYED |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Distance From Shoulder Portion to Nut End | 1.545 INCHES MINIMUM AND 1.575 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT 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 |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.145 INCHES MINIMUM AND 0.175 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| 881BW-4MDH1562 | Stanley Engineered Fastening Llc (USA) |
| 502AS3414-13 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| WS245-4-6-25 PRIMARY | Stanley Engineered Fastening Llc (USA) |
NSN 5307-01-009-2280 is a Stud,locked in, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-009-2280 has 3 manufacturer part numbers on file: 881BW-4MDH1562 (Stanley Engineered Fastening Llc), 502AS3414-13 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), WS245-4-6-25 (Stanley Engineered Fastening Llc).
Key specifications for WS245-4-6-25: Surface Finish: 125.0 MICROINCHES OVERALL; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Cotter Pin Hole Diameter: 0.071 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN; Thread Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM NUT THREAD IN. 22 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.