The Stud,ball, cataloged under National Stock Number 5307-00-371-6720, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-371-6720 |
| Item Name | Stud,ball |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Body Diameter | 2.400 INCHES NOMINAL IN |
| Thread Length | 1.750 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Style Designator | PLAIN SHANK BALL |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Nominal Thread Size | 1.500 INCHES LOCATION NOT OTHERWISE SPECIFIED IN |
| Body Length | 0.250 INCHES NOMINAL IN |
| Plain Shank Length | 3.135 INCHES NOMINAL IN |
| Distance From Spherical Head Centerline to Head End | 1.147 INCHES NOMINAL IN |
| Thread Class | 2A LOCATION NOT OTHERWISE SPECIFIED A |
| Thread Quantity Per Inch | 12 LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL |
| Neck Diameter | 1.313 INCHES NOMINAL IN |
| Thread Series Designator | UN LOCATION NOT OTHERWISE SPECIFIED |
| Plain Shank Diameter | 1.495 INCHES NOMINAL IN |
| Head Diameter | 2.295 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 722321 | 3/9 Design control — primary reference American Standard Inc Westinghouse Air Brake Co Div |
| 722321 | 5/9 Secondary reference Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co |
NSN 5307-00-371-6720 is a Stud,ball, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-00-371-6720: Body Diameter: 2.400 INCHES NOMINAL IN; Thread Length: 1.750 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Style Designator: PLAIN SHANK BALL; Overall Length: 6.275 INCHES NOMINAL 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.