The Bolt,shear, cataloged under National Stock Number 5306-01-079-1363, 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 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-079-1363 |
| Primary Part Number | ST3M571-10D27 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Head Height | 0.608 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN |
| Fastener Length | 2.585 INCHES MINIMUM AND 2.615 INCHES MAXIMUM IN |
| Extended Washer Diameter | 1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN |
| Thread Length | 0.887 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | 23-112,TY A,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Width Between Flats | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Grip Diameter | 0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.331 INCHES MINIMUM AND 2.371 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 |
|---|---|
| S371-10D27 | Huck International, Inc (USA) |
| ST3M571-10D27 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M571-10D27 | Heartland Precision Fasteners Inc (USA) |
| VAL23033-10D27 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB84-10D27 | Hi-Shear Corporation (USA) |
| S11-1059-10D27 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| ST3M571-10D27 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BM3326-10D27 | Huck International, Inc (USA) |
| 11831-10D27 | Reid Products Inc. Dba Reid Products Inc (USA) |
| GS1030-10D27 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| MB84-10D27 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M571-10D27 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VS3060-10D27 | Howmet Global Fastening Systems Inc (USA) |
| AIC752-10D27 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M571-10D27 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| BM3326-10D27 | 5/9 Secondary reference U.S. Government activity |
| 74328-10D27 | 5/2 Secondary reference U.S. Government activity |
| VS3060-10D27 | 5/9 Secondary reference U.S. Government activity |
| S371-10D27 | 5/9 Secondary reference U.S. Government activity |
| 74328-10D27 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5306-01-079-1363 is a Bolt,shear, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-079-1363 has 15 manufacturer part numbers on file: S371-10D27 (Huck International, Inc), ST3M571-10D27 (Fastener Innovation Technology, Inc. Dba F I T), ST3M571-10D27 (Heartland Precision Fasteners Inc), VAL23033-10D27 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), MB84-10D27 (Hi-Shear Corporation) and 10 more.
Key specifications for ST3M571-10D27: Extended Washer Thickness: 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Head Height: 0.608 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN; Fastener Length: 2.585 INCHES MINIMUM AND 2.615 INCHES MAXIMUM IN; Extended Washer Diameter: 1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN. 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.