The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-332-4373, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Prince Industries Llc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-332-4373 |
| Primary Part Number | STSBG000A04U009 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Prince Industries Llc |
| Status | ACTIVE |
| Head Height | 0.164 INCHES NOMINAL IN |
| Fastener Length | 0.855 INCHES NOMINAL IN |
| Thread Length | 0.293 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.562 INCHES NOMINAL 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 | CHROMATE AND NICKEL AND CADMIUM OVERALL |
| Minimum Tensile Strength | 132000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP H11 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 |
|---|---|
| STSBG000A04U009 | Prince Industries Llc (USA) |
| PBF1041A4U0009 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| STSBG000A04U009 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| AIC2263A04U009 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11797A04U009 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VAL23611-4D009 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 68484-4A009 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BM3200-4A009 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VS2978A04U009 | 5/9 Secondary reference U.S. Government activity |
| BM3200-4A009 | 5/9 Secondary reference U.S. Government activity |
| VS2978A04U009 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| STSBG000A04U009 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-332-4373 is a Bolt,close Tolerance, manufactured by Prince Industries Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-332-4373 has 7 manufacturer part numbers on file: STSBG000A04U009 (Prince Industries Llc), PBF1041A4U0009 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), STSBG000A04U009 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), AIC2263A04U009 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 11797A04U009 (Reid Products Inc. Dba Reid Products Inc) and 2 more.
Key specifications for STSBG000A04U009: Head Height: 0.164 INCHES NOMINAL IN; Fastener Length: 0.855 INCHES NOMINAL IN; Thread Length: 0.293 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 16 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.