The Bolt,shear, cataloged under National Stock Number 5306-01-043-0548, 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 18 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-043-0548 |
| Primary Part Number | BACB30MT4T6 |
| 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 | 0.244 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN |
| Fastener Length | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN |
| Thread Length | 0.475 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81205-BACB30MT PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Width Between Flats | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP H11 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 |
|---|---|
| BACB30MT4T6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30MT4T6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30MT4T6 | Federal Manufacturing Corp (USA) |
| BACB30MT4T6 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACB30MT4T6 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| BACB30MT4T6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACB30MT4T6 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
| BACB30MT4T6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-043-0548 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 5306-01-043-0548 has 4 manufacturer part numbers on file: BACB30MT4T6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30MT4T6 (Sps Technologies, Llc Dba PB Fasteners), BACB30MT4T6 (Federal Manufacturing Corp), BACB30MT4T6 (Valley-Todeco, Inc. Dba Arconic Fastening Systems).
Key specifications for BACB30MT4T6: Extended Washer Thickness: 0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Head Height: 0.244 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN; Fastener Length: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN; Extended Washer Diameter: 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN. 18 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.