The Bolt,shear, cataloged under National Stock Number 5306-01-055-6918, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-055-6918 |
| Primary Part Number | BACB30MT6-21 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Extended Washer Thickness | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN |
| Head Height | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| Fastener Length | 1.940 INCHES MINIMUM AND 1.970 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN |
| Thread Length | 0.618 INCHES MINIMUM AND 0.668 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81205-BACB30MT PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 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 | 24 |
| 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 |
|---|---|
| BACB30MT6-21 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30MT6-21 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30MT6-21 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30MT6-21 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30MT6-21 | Huck International, Inc (USA) |
| BACB30MT6-21 | Federal Manufacturing Corp (USA) |
| BACB30MT6-21 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30MT6-21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-055-6918 is a Bolt,shear, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-055-6918 has 7 manufacturer part numbers on file: BACB30MT6-21 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30MT6-21 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30MT6-21 (Sps Technologies, Llc Dba PB Fasteners), BACB30MT6-21 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30MT6-21 (Huck International, Inc) and 2 more.
Key specifications for BACB30MT6-21: Extended Washer Thickness: 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN; Head Height: 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN; Fastener Length: 1.940 INCHES MINIMUM AND 1.970 INCHES MAXIMUM IN; Extended Washer Diameter: 0.639 INCHES MINIMUM AND 0.649 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.