The Bolt,machine, cataloged under National Stock Number 5306-00-809-7418, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-809-7418 |
| Primary Part Number | 51B464-4A39 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Head Height | 0.109 INCHES NOMINAL IN |
| Fastener Length | 2.769 INCHES NOMINAL IN |
| Thread Length | 0.316 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76823-51B464 MANUFACTURERS STANDARD |
| Grip Length | 2.437 INCHES NOMINAL IN |
| Width Between Flats | 0.438 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 51B464-4A39 | Huck International, Inc (USA) |
| 51B464-4A39 | Howmet Global Fastening Systems Inc (USA) |
| 51B464-4A39 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 51B464-4A39 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 51B464-4A39 | Hi-Shear Corporation (USA) |
| 51B464-4A39 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 51B464-4A39 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 51B464-4A39 | 5/2 Secondary reference U.S. Government activity |
| 51B464-4A39 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 51B464-4A39 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-809-7418 is a Bolt,machine, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-809-7418 has 6 manufacturer part numbers on file: 51B464-4A39 (Huck International, Inc), 51B464-4A39 (Howmet Global Fastening Systems Inc), 51B464-4A39 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 51B464-4A39 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 51B464-4A39 (Hi-Shear Corporation) and 1 more.
Key specifications for 51B464-4A39: Head Height: 0.109 INCHES NOMINAL IN; Fastener Length: 2.769 INCHES NOMINAL IN; Thread Length: 0.316 INCHES MINIMUM IN; Nominal Thread Diameter: 0.250 INCHES 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.