The Stud,plain, cataloged under National Stock Number 5307-00-770-7821, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5307-00-770-7821 |
| Primary Part Number | 7707821 |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Thread Length | 0.625 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.719 INCHES MINIMUM NUT THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Thread Pitch Diameters | +0.3462 TO 0.3476 INCHES STUD THREAD IN |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.375 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.375 INCHES NUT THREAD IN |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL COMP 8740 OR STEEL COMP 8742 OR STEEL COMP 4140 OR STEEL COMP 8642 OR STEEL COMP 8640 |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNS 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 |
|---|---|
| 7707821 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 6765895 PRIMARY | General Motors Corp (USA) |
| 6765895 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 5307007707821 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 7707818 | 5/1 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5307-00-770-7821 is a Stud,plain, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-770-7821 has 3 manufacturer part numbers on file: 7707821 (U S Army Tank Automotive Command Amsta-Im-Mm), 6765895 (General Motors Corp), 6765895 (Allison Transmission Inc Dba Allison Transmission, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5307-01-169-3178. Verify interchangeability with system specifications before substitution.
Key specifications for 7707821: Thread Length: 0.625 INCHES MAXIMUM STUD THREAD IN; Thread Length: 0.719 INCHES MINIMUM NUT THREAD IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Thread Pitch Diameters: +0.3462 TO 0.3476 INCHES 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.