The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-528-6952, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Boeing Defence Australia Ltd. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-528-6952 |
| Primary Part Number | BACB30LJ5-19 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Boeing Defence Australia Ltd |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Fastener Length | 1.569 INCHES MINIMUM AND 1.589 INCHES MAXIMUM IN |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.950 INCHES NOMINAL IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.311 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE AND CADMIUM OVERALL |
| Minimum Tensile Strength | 16000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM 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 |
|---|---|
| BACB30LJ5-19 | Boeing Defence Australia Ltd (AUS) |
| BACB30LJ5-19 | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| Reference | Meaning |
|---|---|
| BACB30LJ5-19 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30NF5-19 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-528-6952 is a Bolt,close Tolerance, manufactured by Boeing Defence Australia Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-528-6952 has 2 manufacturer part numbers on file: BACB30LJ5-19 (Boeing Defence Australia Ltd), BACB30LJ5-19 (Boeing Defence Australia Ltd Div Defense, Space & Security).
Key specifications for BACB30LJ5-19: Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN; Fastener Length: 1.569 INCHES MINIMUM AND 1.589 INCHES MAXIMUM IN; Thread Length: 0.444 INCHES MINIMUM AND 0.494 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.