The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-532-2555, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-532-2555 |
| Primary Part Number | BACB30-9 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.111 INCHES NOMINAL IN |
| Fastener Length | 0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Material Document and Classification | NAS498 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND WEDGE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.511 INCHES NOMINAL 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 |
|---|---|
| BACB30-9 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5306-01-532-2555 is a Bolt,close Tolerance, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-532-2555 has 1 manufacturer part number on file: BACB30-9 (Naval Sea Systems Command).
Key specifications for BACB30-9: Head Height: 0.111 INCHES NOMINAL IN; Fastener Length: 0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES NOMINAL IN; Material Document and Classification: NAS498 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.