The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-043-5730, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-043-5730 |
| Primary Part Number | 72901-6-A7 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Thread Length | 0.392 INCHES MINIMUM AND 0.459 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 85495-B-170225 MANUFACTURERS STANDARD |
| Grip Length | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| GB511BG6-7 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 72901-6-A7 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GB511BG6-7 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| GB511BG6-7 | 5/2 Secondary reference U.S. Government activity |
| BM17022S-6-7A | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| BM17022S-6-7A | 5/9 Secondary reference U.S. Government activity |
| GB511BG6-7 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| BM17022S-6-7A | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-043-5730 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-043-5730 has 3 manufacturer part numbers on file: GB511BG6-7 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 72901-6-A7 (Sps Technologies, Llc Dba PB Fasteners), GB511BG6-7 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for 72901-6-A7: Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Thread Length: 0.392 INCHES MINIMUM AND 0.459 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN; Head Style: DOUBLE HEXAGON. 12 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.