The Bolt,shear, cataloged under National Stock Number 5306-01-066-6742, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-066-6742 |
| Primary Part Number | 51B464-4A1 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 0.369 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| 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 |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.052 INCHES MINIMUM AND 0.072 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 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 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 |
|---|---|
| 51B464-4A1 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 51B464-4A1 | Howmet Global Fastening Systems Inc (USA) |
| 51B464-4A1 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 51B464-4A1 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 51B464-4A1 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 51B464-4A1 | 5/2 Secondary reference U.S. Government activity |
| 51B464-4A1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 51B464-4A1 | 5/9 Secondary reference U.S. Government activity |
| 51B464-4A1 | 5/2 Secondary reference U.S. Government activity |
| 51B464-4A1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 5306-01-066-6742 is a Bolt,shear, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-066-6742 has 5 manufacturer part numbers on file: 51B464-4A1 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 51B464-4A1 (Howmet Global Fastening Systems Inc), 51B464-4A1 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 51B464-4A1 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 51B464-4A1 (Hi-Shear Corporation).
Key specifications for 51B464-4A1: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 0.369 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 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.