The Bolt,shear, cataloged under National Stock Number 5306-01-340-2139, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-340-2139 |
| Primary Part Number | BACB30NM4K9 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 0.972 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Color | BLACK THREADS |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY UNS R56400 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 |
|---|---|
| BACB30NM4K9 | Boeing Defence Australia Ltd (AUS) |
| BACB30NM4K9 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30NM4K9 | Huck International, Inc (USA) |
| BACB30NM4K9 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30NM4K9 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACB30NM4K9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30NM4K9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30NM4K9 | 3-V Fastener Co., Inc. (USA) |
| BACB30NM4K9 | Briles Aerospace, Llc (USA) |
| BACB30NM4K9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30NM4K9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30NM4K9 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| BACB30NM4K9 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30NM4K9 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACB30NM4K9 | 5/9 Secondary reference U.S. Government activity |
| BACB30NM4K9 | 5/9 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| BACB30NM4K9 | 5/9 Secondary reference U.S. Government activity |
| 5306PL1859428 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| BACB30NM4K9 | 5/9 Secondary reference U.S. Government activity |
| BACB30NM4K9 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-340-2139 is a Bolt,shear, manufactured by Boeing Defence Australia Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-340-2139 has 12 manufacturer part numbers on file: BACB30NM4K9 (Boeing Defence Australia Ltd), BACB30NM4K9 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), BACB30NM4K9 (Huck International, Inc), BACB30NM4K9 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30NM4K9 (Boeing Defence Australia Ltd Div Defense, Space & Security) and 7 more.
Key specifications for BACB30NM4K9: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN. 20 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.