The Bolt,shear, cataloged under National Stock Number 5306-01-047-7831, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-047-7831 |
| Primary Part Number | 51B464-4A37 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 2.618 INCHES MINIMUM AND 2.659 INCHES MAXIMUM IN |
| Thread Length | 0.296 INCHES MINIMUM AND 0.357 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76823-51B464 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 2.302 INCHES MINIMUM AND 2.322 INCHES MAXIMUM IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OR CADMIUM OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 51B464-4A37 | Hi-Shear Corporation (USA) |
| 51B464-4A37 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 51B464-4A37 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 51B64-4A37 | Huck International, Inc (USA) |
| 51B464-4A37 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 51B464-4A37 | Huck International, Inc (USA) |
| 51B464-4A37 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 51B464-4A37 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 51B464-4A37 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 51B64-4A37 | 5/9 Secondary reference U.S. Government activity |
| 51B464-4A37 | 5/2 Secondary reference U.S. Government activity |
| 51B464-4A37 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-047-7831 is a Bolt,shear, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-047-7831 has 7 manufacturer part numbers on file: 51B464-4A37 (Hi-Shear Corporation), 51B464-4A37 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 51B464-4A37 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 51B64-4A37 (Huck International, Inc), 51B464-4A37 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 2 more.
Key specifications for 51B464-4A37: Head Height: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 2.618 INCHES MINIMUM AND 2.659 INCHES MAXIMUM IN; Thread Length: 0.296 INCHES MINIMUM AND 0.357 INCHES MAXIMUM IN; Hardness Rating: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL. 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.