The Stud,ball, cataloged under National Stock Number 5307-01-618-6265, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Harco Group, Inc.. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-618-6265 |
| Primary Part Number | S1-S |
| Item Name | Stud,ball |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Harco Group, Inc. |
| Status | ACTIVE |
| Thread Length | 0.540 INCHES NOMINAL STUD THREAD IN |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Body Length | 1.200 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Head Diameter | 0.393 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 |
| Part Number | Manufacturer |
|---|---|
| S1-S PRIMARY | Harco Group, Inc. (USA) |
NSN 5307-01-618-6265 is a Stud,ball, manufactured by Harco Group, Inc., classified under FSC 5307, Studs. Status: active.
NSN 5307-01-618-6265 has 1 manufacturer part number on file: S1-S (Harco Group, Inc.).
Key specifications for S1-S: Thread Length: 0.540 INCHES NOMINAL STUD THREAD IN; Nominal Thread Size: 0.312 INCHES STUD THREAD IN; Body Length: 1.200 INCHES NOMINAL IN; Special Features: 304 STAINLESS STEEL. 7 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.