The Stud,locked in, cataloged under National Stock Number 5307-01-152-4245, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-152-4245 |
| Primary Part Number | KNS900-5-12 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES STUD THD |
| Surface Finish | 32.0 MICROINCHES NUT THD |
| Surface Finish | 63.0 MICROINCHES SHANK |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.500 INCHES MINIMUM AND 0.560 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM STUD THREAD IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Style Designator | LOCKED IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Distance From End of Stud End Threads to Nut End | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.438 INCHES STUD THREAD IN |
| Locking Feature | RING, LOCK SERRATED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 14 STUD THREAD |
| Material | STEEL COMP 4140 |
| 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 |
|---|---|
| KNS900-5-12 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| KNS900-5-12 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Microdot Products |
| MS51833-203-12 | 3/2 Design control — primary reference U.S. Government activity |
| MS51833-203-12 | 5/9 Secondary reference U.S. Government activity |
| 10116433 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5307-01-152-4245 is a Stud,locked in, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-152-4245 has 1 manufacturer part number on file: KNS900-5-12 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for KNS900-5-12: Surface Finish: 63.0 MICROINCHES STUD THD; Surface Finish: 32.0 MICROINCHES NUT THD; Surface Finish: 63.0 MICROINCHES SHANK; Surface Treatment Document and Classification: QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.