The Stud,recessed and Stepped, cataloged under National Stock Number 5307-00-168-2899, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-168-2899 |
| Primary Part Number | 6875530-4 |
| Item Name | Stud,recessed and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES NUT THD |
| Surface Finish | 63.0 MICROINCHES SHANK |
| Surface Finish | 32.0 MICROINCHES STUD THD |
| Thread Length | 0.940 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 0.709 INCHES NOMINAL NUT THREAD IN |
| Thread Pitch Diameters | +0.3447 TO 0.3457 INCHES STUD THREAD IN |
| Material Document and Classification | EMS-85040 FSCM 73342 MFR REF SINGLE MATERIAL RESPONSE |
| Diameter of Recessed Portion of Shank | 0.279 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Material | STEEL |
| Thread Series Designator | UNJS STUD THREAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5307-00-168-2899 is a Stud,recessed and Stepped, manufactured by Rolls-Royce Corporation, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-168-2899 has 2 manufacturer part numbers on file: 6875530-4 (Allison Transmission Inc Dba Allison Transmission, Inc), 6875530-4 (Rolls-Royce Corporation).
Key specifications for 6875530-4: Surface Finish: 32.0 MICROINCHES NUT THD; Surface Finish: 63.0 MICROINCHES SHANK; Surface Finish: 32.0 MICROINCHES STUD THD; Thread Length: 0.940 INCHES NOMINAL STUD THREAD IN. 15 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.