The Stud,stepped, cataloged under National Stock Number 5307-01-366-1325, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-366-1325 |
| Item Name | Stud,stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Shank Diameter | 0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Cotter Pin Hole Diameter | 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN |
| Thread Length | 0.469 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 0.562 INCHES NOMINAL NUT THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | STEPPED |
| Material Document and Classification | AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6320 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL COMP 8740 OR STEEL COMP 8735 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.110 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| AN152997 | 2/2 Government specification standardization U.S. Government activity |
NSN 5307-01-366-1325 is a Stud,stepped, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-366-1325: Shank Diameter: 0.221 INCHES MINIMUM AND 0.231 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Cotter Pin Hole Diameter: 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN; Thread Length: 0.469 INCHES NOMINAL STUD THREAD IN. 21 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.