The Bolt,shear, cataloged under National Stock Number 5306-01-546-2550, 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 15 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-546-2550 |
| Primary Part Number | BACB30LM3U43 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Fastener Length | 3.231 INCHES NOMINAL IN |
| Thread Length | 0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.688 INCHES NOMINAL IN |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 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 |
|---|---|
| BACB30LM3U43 | Federal Manufacturing Corp (USA) |
| BACB30LM3U43 | Howmet Global Fastening Systems Inc (USA) |
| BACB30LM3U43 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LM3U43 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LM3U43 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LM3U43 | Huck International, Inc (USA) |
| BACB30LM3U43 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LM3U43 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| Reference | Meaning |
|---|---|
| BACB30LM3U43 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5306-01-546-2550 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 5306-01-546-2550 has 8 manufacturer part numbers on file: BACB30LM3U43 (Federal Manufacturing Corp), BACB30LM3U43 (Howmet Global Fastening Systems Inc), BACB30LM3U43 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LM3U43 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LM3U43 (Sps Technologies, Llc Dba PB Fasteners) and 3 more.
Key specifications for BACB30LM3U43: Head Height: 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Fastener Length: 3.231 INCHES NOMINAL IN; Thread Length: 0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN. 15 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.