The Bolt,shear, cataloged under National Stock Number 5306-01-480-8320, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-480-8320 |
| Primary Part Number | ST3M571-3H6 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| 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 | 0.759 INCHES MINIMUM AND 0.789 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Thread Length | 0.399 INCHES NOMINAL IN |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.375 INCHES NOMINAL IN |
| Head Minor Diameter | 0.278 INCHES NOMINAL 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 COMP XM-13 OVERALL |
| Hole Quantity | 2 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.032 INCHES MINIMUM AND 0.042 INCHES MAXIMUM 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 |
|---|---|
| ST3M571-3H6 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M571-3H6 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| ST3M571-3H5 | Houston Precision Fasteners I Lp (USA) |
| A1C752-3H6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11831-3H6 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| VAL23033-3H6 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM3326-3H6 PRIMARY | Huck International, Inc (USA) |
| ST3M571-3H6 PRIMARY | The Boeing Company Div Defense (USA) |
| BM3326-3H6 | Heartland Precision Fasteners Inc (USA) |
| S11-1059-3H6 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| GS1030-3H6 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M571-3H6 | Huck International, Inc (USA) |
| MB84-3H6 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HP7571-3H6 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| 74328-3H6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MB84-3H6 | Hi-Shear Corporation (USA) |
| VS3060-3H6 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BM3326-3H6 | 5/9 Secondary reference U.S. Government activity |
| VS3060-3H6 | 5/9 Secondary reference U.S. Government activity |
| 74328-3H6 | 5/2 Secondary reference U.S. Government activity |
| S371-3H6 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-480-8320 is a Bolt,shear, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-480-8320 has 17 manufacturer part numbers on file: ST3M571-3H6 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M571-3H6 (Fastener Innovation Technology, Inc. Dba F I T), ST3M571-3H5 (Houston Precision Fasteners I Lp), A1C752-3H6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 11831-3H6 (Reid Products Inc. Dba Reid Products Inc) and 12 more.
Key specifications for ST3M571-3H6: 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: 0.759 INCHES MINIMUM AND 0.789 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 23 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.