The Stud,locked in, cataloged under National Stock Number 5307-01-022-0438, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 23 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 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 | 5307-01-022-0438 |
| Primary Part Number | 94440 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES NUT THD |
| Surface Finish | 63.0 MICROINCHES SHANK |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.437 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 0.625 INCHES MINIMUM NUT THREAD IN |
| Style Designator | LOCKED IN |
| Material Document and Classification | AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.438 INCHES STUD THREAD IN |
| Shoulder Diameter | 0.308 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Locking Feature | KEY INSERTS |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 3A NUT THREAD A |
| Distance From Shoulder Portion to Nut End | 1.062 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 14 STUD THREAD |
| Material | STEEL |
| Shoulder Length | 0.175 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 94440 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5307-01-022-0438 is a Stud,locked in, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-022-0438 has 1 manufacturer part number on file: 94440 (Triumph Engine Control Systems Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5120-01-398-9288, 4730-01-435-5929, 6525-01-470-5876. Verify interchangeability with system specifications before substitution.
Key specifications for 94440: Surface Finish: 63.0 MICROINCHES NUT THD; Surface Finish: 63.0 MICROINCHES SHANK; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.437 INCHES NOMINAL STUD THREAD IN. 23 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.