The Bolt,square Neck, cataloged under National Stock Number 5306-01-465-4551, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-465-4551 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Neck Length | 0.940 INCHES NOMINAL IN |
| Head Height | 0.060 INCHES NOMINAL IN |
| Fastener Length | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN |
| Distance From Centerline to Flat | 0.130 INCHES NOMINAL IN |
| Thread Length | 0.330 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6370 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DEE |
| Thread Direction | RIGHT-HAND |
| Neck Width | 0.350 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4130 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.360 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 |
|---|---|
| 4G29012-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-465-4551 is a Bolt,square Neck, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-465-4551: Neck Length: 0.940 INCHES NOMINAL IN; Head Height: 0.060 INCHES NOMINAL IN; Fastener Length: 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN; Distance From Centerline to Flat: 0.130 INCHES NOMINAL IN. 16 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.