The Stud,locked in, cataloged under National Stock Number 5307-01-615-7998, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5307-01-615-7998 |
| Primary Part Number | ST5071-13 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 0.6075 INCHES MINIMUM AND 0.6375 INCHES MAXIMUM IN |
| Thread Length | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.6075 INCHES MINIMUM AND 0.6375 INCHES MAXIMUM NUT THREAD IN |
| Criticality Code Justification | FEAT |
| Style Designator | LOCKED IN |
| Distance From Serrated Portion to End of Stud Thread | 0.175 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.2500 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.4375 INCHES STUD THREAD IN |
| Distance From Serrated Portion to Stud End | 0.535 INCHES MINIMUM AND 0.595 INCHES MAXIMUM IN |
| Locking Feature | KEY INSERTS |
| Surface Treatment | LUBRICANT STUD THD |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 14 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | NICKEL ALLOY 718 AND NICKEL ALLOY X-750 |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| ST5071-13 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| KHS10369-4-13 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Microdot Products |
| TR28040-13 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-01-615-7998 is a Stud,locked in, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-615-7998 has 1 manufacturer part number on file: ST5071-13 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for ST5071-13: Distance From Serrated Portion to Nut End: 0.6075 INCHES MINIMUM AND 0.6375 INCHES MAXIMUM IN; Thread Length: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.6075 INCHES MINIMUM AND 0.6375 INCHES MAXIMUM NUT THREAD IN; Criticality Code Justification: FEAT. 20 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.