The Bolt,square Neck, cataloged under National Stock Number 5306-00-353-1748, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners. Government technical data includes 14 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 | 5306-00-353-1748 |
| Primary Part Number | 302856 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners |
| Status | ACTIVE |
| Neck Length | 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Head Height | 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| Fastener Length | 10.125 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Neck Width | 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 48 |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.813 INCHES MINIMUM AND 0.844 INCHES MAXIMUM 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 |
|---|---|
| 302856 PRIMARY | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
NSN 5306-00-353-1748 is a Bolt,square Neck, manufactured by All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-353-1748 has 1 manufacturer part number on file: 302856 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners).
Key specifications for 302856: Neck Length: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Head Height: 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN; Fastener Length: 10.125 INCHES NOMINAL IN; Thread Length: 0.375 INCHES MINIMUM IN. 14 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.