The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-519-7785, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-519-7785 |
| Primary Part Number | BACB30LJ4-16 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 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 | 1.374 INCHES MINIMUM AND 1.404 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.364 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81205-BACB30LJ MANUFACTURERS STANDARD |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE 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 |
|---|---|
| BACB30LJ4-16 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LJ4-16 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LJ4-16 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LJ4-16 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| BACB30LJ4-16 | Federal Manufacturing Corp (USA) |
| BACB30LJ4-16 | Boeing Defence Australia Ltd (AUS) |
| Reference | Meaning |
|---|---|
| BACB30LJ4-16 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LJ4-16 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-519-7785 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-519-7785 has 6 manufacturer part numbers on file: BACB30LJ4-16 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LJ4-16 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LJ4-16 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LJ4-16 (Boeing Defence Australia Ltd Div Defense, Space & Security), BACB30LJ4-16 (Federal Manufacturing Corp) and 1 more.
Key specifications for BACB30LJ4-16: 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. 21 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.