The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-040-3363, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Federal Manufacturing Corp. Government technical data includes 19 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-040-3363 |
| Primary Part Number | BACB30LJ6DU48 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Federal Manufacturing Corp |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Fastener Length | 3.455 INCHES MINIMUM AND 3.485 INCHES MAXIMUM IN |
| Thread Length | 0.445 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | UNDERCUT HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.284 INCHES MINIMUM AND 3.334 INCHES MAXIMUM 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 |
|---|---|
| BACB30LJ6DU48 PRIMARY | Federal Manufacturing Corp (USA) |
| BACB30LJ6DU48 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LJ6DU48 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LJ6DU48 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LJ6DU48 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LJ6DU48 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30LJ6DU48 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACB30LJ6DU48 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACB30LJ6DU48 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ6DU48 | 5/9 Secondary reference Huck International, Inc |
| BACB30LJ6DU48 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ6DU48 | 7/2 Vendor item drawing reference U.S. Government activity |
| BACB30LJ6DU48 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-040-3363 is a Bolt,close Tolerance, manufactured by Federal Manufacturing Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-040-3363 has 8 manufacturer part numbers on file: BACB30LJ6DU48 (Federal Manufacturing Corp), BACB30LJ6DU48 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LJ6DU48 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30LJ6DU48 (Sps Technologies, Llc Dba PB Fasteners), BACB30LJ6DU48 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 3 more.
Key specifications for BACB30LJ6DU48: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN. 19 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.