The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-947-2172, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-947-2172 |
| Primary Part Number | BACB30LJ4DU12 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 1.094 INCHES NOMINAL IN |
| Thread Length | 0.344 INCHES MINIMUM IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.750 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES NOMINAL IN |
| Grip Diameter | 0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.938 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 |
|---|---|
| BACB30LJ4DU12 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LJ4DU12 | Heartland Precision Fasteners Inc (USA) |
| BACB30LJ4DU12 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LJ4DU12 | Federal Manufacturing Corp (USA) |
| BACB30LJ4DU12 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30LJ4DU12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LJ4DU12 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LJ4DU12 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| Reference | Meaning |
|---|---|
| BACB30LJ4DU12 | 5/9 Secondary reference U.S. Government activity |
| BACB30LJ4DU12 | 5/2 Secondary reference U.S. Government activity |
| BACB30BH4-12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-947-2172 is a Bolt,close Tolerance, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-947-2172 has 8 manufacturer part numbers on file: BACB30LJ4DU12 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LJ4DU12 (Heartland Precision Fasteners Inc), BACB30LJ4DU12 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LJ4DU12 (Federal Manufacturing Corp), BACB30LJ4DU12 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok) and 3 more.
Key specifications for BACB30LJ4DU12: Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 1.094 INCHES NOMINAL IN; Thread Length: 0.344 INCHES MINIMUM IN; Shank Unthreaded Hole Diameter: 0.076 INCHES NOMINAL FIRST HOLE IN. 15 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.