The Stud,locked in, cataloged under National Stock Number 5307-00-079-2605, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Micro Machining, Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5307-00-079-2605 |
| Primary Part Number | 300R401H01 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Micro Machining, Inc |
| Status | ACTIVE |
| Distance From Serrated Portion to Nut End | 1.000 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.300 INCHES NOMINAL STUD THREAD IN |
| Style Designator | LOCKED IN |
| Thread Pitch Diameters | +0.2869 TO 0.2884 INCHES STUD THREAD IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.140 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.3125 INCHES STUD THREAD IN |
| Distance From Serrated Portion to Stud End | 0.440 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 24 STUD THREAD |
| Material | STEEL COMP 303 |
| Thread Series Designator | UNF STUD THREAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 300R401H01 | Micro Machining, Inc (USA) |
| Reference | Meaning |
|---|---|
| 300R401H01 | 3/2 Design control — primary reference U.S. Government activity |
| 300R401H01 | 5/9 Secondary reference Westinghouse Electric Corp |
NSN 5307-00-079-2605 is a Stud,locked in, manufactured by Micro Machining, Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-079-2605 has 1 manufacturer part number on file: 300R401H01 (Micro Machining, Inc).
Key specifications for 300R401H01: Distance From Serrated Portion to Nut End: 1.000 INCHES NOMINAL IN; Thread Length: 0.500 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.300 INCHES NOMINAL STUD THREAD IN; Style Designator: LOCKED IN. 17 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.
NSN 5307-00-079-2605 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.