The Bolt,machine, cataloged under National Stock Number 5306-00-802-7148, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-802-7148 |
| Primary Part Number | 51B464-4-15 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 1.253 INCHES NOMINAL IN |
| Thread Length | 0.316 INCHES MINIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.938 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 |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.137 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 | F |
| Part Number | Manufacturer |
|---|---|
| 51B464-4-15 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 51B464-4-15 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 51B464-4-15 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 51B464-4-15 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 51B464-4-15 | Hi-Shear Corporation (USA) |
| 51B464-4-15 | Huck International, Inc (USA) |
| 51B464-4-15 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 51B464-4-15 | 5/2 Secondary reference U.S. Government activity |
| 51B464-4-15 | 5/2 Secondary reference U.S. Government activity |
| 51B464-4-15 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 51B464-4-15 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 51B464-4-15 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-802-7148 is a Bolt,machine, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-802-7148 has 7 manufacturer part numbers on file: 51B464-4-15 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 51B464-4-15 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 51B464-4-15 (Northrop Grumman Systems Corporation), 51B464-4-15 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 51B464-4-15 (Hi-Shear Corporation) and 2 more.
Key specifications for 51B464-4-15: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 1.253 INCHES NOMINAL IN; Thread Length: 0.316 INCHES MINIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES NOMINAL FIRST HOLE IN. 17 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.