The Bolt,shear, cataloged under National Stock Number 5306-01-271-0374, 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 21 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-271-0374 |
| Primary Part Number | ST3M753-6D34 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Extended Washer Thickness | 0.044 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Head Height | 0.263 INCHES MINIMUM AND 0.303 INCHES MAXIMUM IN |
| Fastener Length | 2.724 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-83488 TY2 CL3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.691 INCHES MINIMUM AND 0.701 INCHES MAXIMUM IN |
| Thread Length | 2.589 INCHES MINIMUM AND 2.639 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.423 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 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 XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.501 INCHES MINIMUM AND 2.541 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 |
|---|---|
| VFK600-6D34 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M753-6D34 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| MB156-6D34 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC763-6D34 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M753-6D34 PRIMARY | The Boeing Company Div Defense (USA) |
| PBF 1267-6D34 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB156-6D34 | Hi-Shear Corporation (USA) |
| 122897-6D34 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HP7753-6D34 | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| V53190-6D34 | 5/2 Secondary reference U.S. Government activity |
| S343-6D34 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| VS3190-6D34 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| VS3190-6D34 | 5/9 Secondary reference Stewart and Stevenson Power Inc |
| S343-6D34 | 5/9 Secondary reference U.S. Government activity |
| 122897-6D34 | 5/2 Secondary reference U.S. Government activity |
| 122897-6D34 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-271-0374 is a Bolt,shear, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-271-0374 has 9 manufacturer part numbers on file: VFK600-6D34 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M753-6D34 (Fastener Innovation Technology, Inc. Dba F I T), MB156-6D34 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), AIC763-6D34 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M753-6D34 (The Boeing Company Div Defense) and 4 more.
Key specifications for ST3M753-6D34: Extended Washer Thickness: 0.044 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN; Head Height: 0.263 INCHES MINIMUM AND 0.303 INCHES MAXIMUM IN; Fastener Length: 2.724 INCHES MINIMUM AND 2.754 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-83488 TY2 CL3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL. 21 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.