The Bolt,square Neck, cataloged under National Stock Number 5306-01-075-7079, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-075-7079 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Neck Length | 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN |
| Head Height | 0.300 INCHES NOMINAL0.300 INCHES NOMINAL IN |
| Fastener Length | 0.900 INCHES NOMINAL0.900 INCHES NOMINAL IN |
| Thread Length | 0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES0.250 INCHES IN |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Neck Width | 0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 2828 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.562 INCHES NOMINAL0.562 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 |
|---|---|
| 5306PL0575760 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 16B1885-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-075-7079 is a Bolt,square Neck, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-075-7079: Neck Length: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN; Head Height: 0.300 INCHES NOMINAL0.300 INCHES NOMINAL IN; Fastener Length: 0.900 INCHES NOMINAL0.900 INCHES NOMINAL IN; Thread Length: 0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN. 13 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.