The Bolt,shear, cataloged under National Stock Number 5306-00-782-8250, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-782-8250 |
| Primary Part Number | BACB30GT8-31 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Fastener Length | 2.343 INCHES MINIMUM AND 2.390 INCHES MAXIMUM IN |
| Thread Length | 0.396 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.106 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.927 INCHES MINIMUM AND 1.947 INCHES MAXIMUM IN |
| Width Between Flats | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Grip Diameter | 0.4978 INCHES MINIMUM AND 0.4983 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.187 INCHES NOMINAL FIRST HOLE IN |
| 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 |
|---|---|
| BACB30GT8-31 | Howmet Global Fastening Systems Inc (USA) |
| BACB30GT8-31 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30GT8-31 | The Boeing Company (USA) |
| BACB30GT8-31 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30GT8-31 | 5/9 Secondary reference Top-Kut Meats Inc |
| BACB30GT8-31 | 5/2 Secondary reference U.S. Government activity |
| BACB30GT8-31 | 5/2 Secondary reference U.S. Government activity |
| BACB30GT8-31 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-782-8250 is a Bolt,shear, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-782-8250 has 4 manufacturer part numbers on file: BACB30GT8-31 (Howmet Global Fastening Systems Inc), BACB30GT8-31 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30GT8-31 (The Boeing Company), BACB30GT8-31 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for BACB30GT8-31: Head Height: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN; Fastener Length: 2.343 INCHES MINIMUM AND 2.390 INCHES MAXIMUM IN; Thread Length: 0.396 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 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.