The Stud,ball, cataloged under National Stock Number 5307-00-159-6273, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-159-6273 |
| Primary Part Number | 11656921 |
| Item Name | Stud,ball |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES HEAD |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.620 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Material Document and Classification | QQ-S-637 FED SPEC ALL MATERIAL RESPONSES |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Nominal Thread Size | 0.438 INCHES LOCATION NOT OTHERWISE SPECIFIED IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Distance From Spherical Head Centerline to Head End | 0.250 INCHES NOMINAL IN |
| Thread Class | 2A LOCATION NOT OTHERWISE SPECIFIED A |
| Thread Quantity Per Inch | 20 LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL COMP 1117 OR STEEL COMP B1113 |
| Thread Series Designator | UNF LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5307-00-159-6273 is a Stud,ball, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-159-6273 has 2 manufacturer part numbers on file: 11656921 (U S Army Tank Automotive Command Amsta-Im-Mm), 944666 (Am General Llc).
Key specifications for 11656921: Surface Finish: 63.0 MICROINCHES HEAD; Surface Treatment Document and Classification: QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.620 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Material Document and Classification: QQ-S-637 FED SPEC ALL MATERIAL RESPONSES. 12 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.