The Stud,plain, cataloged under National Stock Number 5307-00-527-6871, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Borg-Warner Corp. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5307-00-527-6871 |
| Primary Part Number | 4544B |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Borg-Warner Corp |
| Status | ACTIVE |
| Thread Length | 0.750 INCHES MINIMUM NUT THREAD IN |
| Thread Length | 0.562 INCHES MINIMUM STUD THREAD IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.500 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.500 INCHES STUD THREAD IN |
| Thread Class | 2A NUT THREAD A |
| Thread Class | 5A STUD THREAD A |
| Thread Quantity Per Inch | 13 STUD THREAD |
| Thread Quantity Per Inch | 20 NUT THREAD |
| Material | STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 9440 |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) 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 |
| Part Number | Manufacturer |
|---|---|
| 4544B PRIMARY | Borg-Warner Corp (USA) |
| Reference | Meaning |
|---|---|
| 4544B | 5/9 Secondary reference Liberty Ventures Inti, Llc |
| 666973 | 3/9 Design control — primary reference Sasco Inc Canadian Div |
NSN 5307-00-527-6871 is a Stud,plain, manufactured by Borg-Warner Corp, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-527-6871 has 1 manufacturer part number on file: 4544B (Borg-Warner Corp).
Key specifications for 4544B: Thread Length: 0.750 INCHES MINIMUM NUT THREAD IN; Thread Length: 0.562 INCHES MINIMUM STUD THREAD IN; Hardness Rating: 28.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM; Material Document and Classification: ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES. 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.