The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-043-6882, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-043-6882 |
| Primary Part Number | GB511BG5-9 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.187 INCHES NOMINAL IN |
| Thread Length | 0.334 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 85495-B-170225 MANUFACTURERS STANDARD |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 156000 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| GB511BG5-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GB511BG5-9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GB511BG5-9 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| GB511BG5-9 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BM170225-5-9A | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 72901-5-A9 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| GB511BG | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| AIC5B13-5-A9 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| BM170225-5-9A | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-043-6882 is a Bolt,close Tolerance, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-043-6882 has 4 manufacturer part numbers on file: GB511BG5-9 (Sps Technologies, Llc Dba PB Fasteners), GB511BG5-9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), GB511BG5-9 (Northrop Grumman Systems Corporation), GB511BG5-9 (Huck International, Inc).
Key specifications for GB511BG5-9: Head Height: 0.187 INCHES NOMINAL IN; Thread Length: 0.334 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN; Head Style: DOUBLE HEXAGON. 13 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.