The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-00-033-4577, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Hf Group Inc Dba Hf Group Inc. Government technical data includes 18 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-033-4577 |
| Primary Part Number | 101149-1 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Hf Group Inc Dba Hf Group Inc |
| Status | ACTIVE |
| Nut End Shank Diameter | 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Thread Length | 0.500 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.375 INCHES NOMINAL STUD THREAD IN |
| Style Designator | SHOULDERED AND STEPPED |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Nut End Shank Length | 2.250 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 18 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL |
| Distance Across Flats | 0.625 INCHES NOMINAL IN |
| Shoulder Length | 0.177 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) 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 |
|---|---|
| 101149-1 PRIMARY | Hf Group Inc Dba Hf Group Inc (USA) |
NSN 5307-00-033-4577 is a Stud,shouldered and Stepped, manufactured by Hf Group Inc Dba Hf Group Inc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-033-4577 has 1 manufacturer part number on file: 101149-1 (Hf Group Inc Dba Hf Group Inc).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-408-5569. Verify interchangeability with system specifications before substitution.
Key specifications for 101149-1: Nut End Shank Diameter: 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Thread Length: 0.500 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.375 INCHES NOMINAL STUD THREAD IN; Style Designator: SHOULDERED AND STEPPED. 18 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.