The Bolt,shear, cataloged under National Stock Number 5306-01-651-6961, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-651-6961 |
| Primary Part Number | BACB30US4K12Y |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Head Height | 0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Fastener Length | 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Width Between Flats | 0.247 INCHES MINIMUM AND 0.361 INCHES MAXIMUM IN |
| Grip Diameter | 0.2793 INCHES MINIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY 718 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 |
|---|---|
| BACB30US4K12Y | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30US4K12Y | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30US4K12Y | Federal Manufacturing Corp (USA) |
| BACB30US4K12Y | Blanc Aero Industrie Villefranche De Rouergue - Groupe Lisi Aerospace (FRA) |
| BACB30US4K12Y | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30US4K12Y | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30US4K12Y | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30US4K12Y | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30US4K12Y | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30US4K12Y | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| Reference | Meaning |
|---|---|
| BACB30US4K12Y | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-651-6961 is a Bolt,shear, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-651-6961 has 10 manufacturer part numbers on file: BACB30US4K12Y (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30US4K12Y (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30US4K12Y (Federal Manufacturing Corp), BACB30US4K12Y (Blanc Aero Industrie Villefranche De Rouergue - Groupe Lisi Aerospace), BACB30US4K12Y (Sps Technologies, Llc Dba PB Fasteners) and 5 more.
Key specifications for BACB30US4K12Y: Extended Washer Thickness: 0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Head Height: 0.225 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN; Fastener Length: 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Extended Washer Diameter: 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM 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.