The Bolt,shear, cataloged under National Stock Number 5306-00-292-5478, 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 19 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-292-5478 |
| Primary Part Number | ST3M571-8D47 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.113 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Head Height | 0.494 INCHES MINIMUM AND 0.514 INCHES MAXIMUM IN |
| Fastener Length | 3.690 INCHES MINIMUM AND 3.720 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.818 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN |
| Thread Length | 0.742 INCHES MINIMUM AND 0.792 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.928 INCHES MINIMUM AND 2.948 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.444 INCHES MINIMUM AND 3.484 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| ST3M571-8D47 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M571-8D47 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 74328-8D47 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M571-8D47 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| AIC752-8D47 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-8D47 PRIMARY | The Boeing Company Div Defense (USA) |
| VAL23033-8D47 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB84-8D47 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| S11-1059-8D47 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| MB84-8D47 | Hi-Shear Corporation (USA) |
| GS1030-8D47 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| BM3326-8D47 | 5/9 Secondary reference U.S. Government activity |
| VS3060-8D47 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| S371-8D47 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M571-8D47 | 5/2 Secondary reference U.S. Government activity |
| BM3326-8D47 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VS3060-8D47 | 5/9 Secondary reference U.S. Government activity |
| S371-8D47 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-8D47 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-00-292-5478 is a Bolt,shear, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-292-5478 has 11 manufacturer part numbers on file: ST3M571-8D47 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M571-8D47 (Fastener Innovation Technology, Inc. Dba F I T), 74328-8D47 (Sps Technologies, Llc Dba PB Fasteners), ST3M571-8D47 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), AIC752-8D47 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 6 more.
Key specifications for ST3M571-8D47: Extended Washer Thickness: 0.113 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Head Height: 0.494 INCHES MINIMUM AND 0.514 INCHES MAXIMUM IN; Fastener Length: 3.690 INCHES MINIMUM AND 3.720 INCHES MAXIMUM IN; Extended Washer Diameter: 0.818 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN. 19 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.