The Bolt,shear, cataloged under National Stock Number 5306-01-264-5879, 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 20 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-264-5879 |
| Primary Part Number | ST3M571-6D13 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN |
| Head Height | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| Fastener Length | 1.411 INCHES MINIMUM AND 1.441 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM IN |
| Thread Length | 0.529 INCHES MINIMUM AND 0.639 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Width Between Flats | 0.429 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8660H OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.188 INCHES MINIMUM AND 1.228 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 |
|---|---|
| ST3M571-6D13 | Huck International, Inc (USA) |
| ST3M571-6D13 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M571-6D13 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M571-6D13 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M571-6D13 PRIMARY | The Boeing Company Div Defense (USA) |
| ST3M571-6D13 | Howmet Global Fastening Systems Inc (USA) |
| ST3M571-6D13 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-6D13 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GS1030-6D13 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M571-6D13 | Hi-Shear Corporation (USA) |
| ST3M571-6D13 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS3060-6D13 | 5/9 Secondary reference U.S. Government activity |
| BM3326-6D13 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M571-6D13 | 5/2 Secondary reference U.S. Government activity |
| ST3M571-6D13 | 5/2 Secondary reference U.S. Government activity |
| BM3326-6D13 | 5/9 Secondary reference U.S. Government activity |
| S371-6D13 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M571-6D13 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-264-5879 is a Bolt,shear, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-264-5879 has 11 manufacturer part numbers on file: ST3M571-6D13 (Huck International, Inc), ST3M571-6D13 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M571-6D13 (Sps Technologies, Llc Dba PB Fasteners), ST3M571-6D13 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), ST3M571-6D13 (The Boeing Company Div Defense) and 6 more.
Key specifications for ST3M571-6D13: Extended Washer Thickness: 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN; Head Height: 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN; Fastener Length: 1.411 INCHES MINIMUM AND 1.441 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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.