The Bolt,shear, cataloged under National Stock Number 5306-00-288-2235, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 15 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-288-2235 |
| Primary Part Number | ST3M571-3-8 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Head Height | 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN |
| Fastener Length | 0.882 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Thread Length | 0.372 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 76301-ST3-571 MANUFACTURERS STANDARD |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| GS1030-3-8 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M571-3-8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VS3060-3-8 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| MB84-3-8 | Hi-Shear Corporation (USA) |
| 74328-3-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC752-3-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF23T3P8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| S11-1059-3-8 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BM3326-3-8 | Huck International, Inc (USA) |
| MB84-3-8 | Satair A/s (DNK) |
| MB84-3-8 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| S371-3-8 | Huck International, Inc (USA) |
| ST3M571-3-8 PRIMARY | The Boeing Company Div Defense (USA) |
| VS3060-3-8 | Howmet Global Fastening Systems Inc (USA) |
| VAL23033-3-8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BM3326-3-8 | 5/9 Secondary reference U.S. Government activity |
| ST35571-3-8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| S371-3-8 | 5/9 Secondary reference U.S. Government activity |
| VS3060-3-8 | 5/9 Secondary reference U.S. Government activity |
| 642AS0735-1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5306-00-288-2235 is a Bolt,shear, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-288-2235 has 15 manufacturer part numbers on file: GS1030-3-8 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), ST3M571-3-8 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VS3060-3-8 (Fairchild Fasteners Europe - Vsd Gmbh), MB84-3-8 (Hi-Shear Corporation), 74328-3-8 (Sps Technologies, Llc Dba PB Fasteners) and 10 more.
Key specifications for ST3M571-3-8: Extended Washer Thickness: 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN; Head Height: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN; Fastener Length: 0.882 INCHES MINIMUM AND 0.912 INCHES MAXIMUM IN; Extended Washer Diameter: 0.340 INCHES MINIMUM AND 0.350 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.