The Stud,locked in, cataloged under National Stock Number 5307-01-486-1337, 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 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-486-1337 |
| Primary Part Number | ST2955-10 |
| 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 | 0.595 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN |
| Thread Length | 0.235 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 0.525 INCHES NOMINAL NUT THREAD IN |
| Style Designator | LOCKED IN |
| Material Document and Classification | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.100 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.437 INCHES STUD THREAD IN |
| Distance From Serrated Portion to Stud End | 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Locking Feature | KEY INSERTS |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Material | NICKEL ALLOY 718 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| Furnished Items and Quantity | 2 SELF-BROACHING LOCKING KEES |
| 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 |
|---|---|
| ST2955-10 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| KNS10089-5-10 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| TR28029-10 | 3/2 Design control — primary reference U.S. Government activity |
| KNS10089-5-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Microdot Products |
| ST2956-10 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| ST2954-10 | 5/1 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5307-01-486-1337 is a Stud,locked in, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-486-1337 has 2 manufacturer part numbers on file: ST2955-10 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), KNS10089-5-10 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for ST2955-10: Distance From Serrated Portion to Nut End: 0.595 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN; Thread Length: 0.235 INCHES NOMINAL STUD THREAD IN; Thread Length: 0.525 INCHES NOMINAL NUT 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.