The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-040-4708, 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 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-040-4708 |
| Primary Part Number | BACB30LJ4U7 |
| 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 | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 0.811 INCHES MINIMUM AND 0.841 INCHES MAXIMUM IN |
| Thread Length | 0.364 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | UNDERCUT HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 97928-BACB30LJ MANUFACTURERS STANDARD |
| Grip Length | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| BACB30LJ4U7 PRIMARY | Federal Manufacturing Corp (USA) |
| BACB30LJ4U7 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LJ4U7 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LJ4U7 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LJ4U7 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACB30LJ4U7 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACB30LJ4U7 | Boeing Defence Australia Ltd (AUS) |
| Reference | Meaning |
|---|---|
| BACB30LJ4U7 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LJ4U7 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LJ4U7 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ4U7 | 7/2 Vendor item drawing reference U.S. Government activity |
| BACB30LJ4U7 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LJ4U7 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5306-01-040-4708 is a Bolt,close Tolerance, manufactured by Federal Manufacturing Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-040-4708 has 7 manufacturer part numbers on file: BACB30LJ4U7 (Federal Manufacturing Corp), BACB30LJ4U7 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LJ4U7 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LJ4U7 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LJ4U7 (Howmet Global Fastening Systems Inc) and 2 more.
Key specifications for BACB30LJ4U7: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.125 INCHES MINIMUM AND 0.140 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.