The Bolt,shear, cataloged under National Stock Number 5306-01-201-9027, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-201-9027 |
| Primary Part Number | S343-7DD44 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Head Height | 0.330 INCHES NOMINAL IN |
| Fastener Length | 3.565 INCHES MINIMUM AND 3.595 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN |
| Thread Length | 0.680 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM ALL HOLES IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.865 INCHES MINIMUM AND 2.885 INCHES MAXIMUM IN |
| Width Between Flats | 0.485 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 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 COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.341 INCHES MINIMUM AND 3.361 INCHES MAXIMUM ALL HOLES 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 |
|---|---|
| S343-7DD44 PRIMARY | Huck International, Inc (USA) |
| MB156-7DD44 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M753-7DD44 | Houston Precision Fasteners I Lp (USA) |
| ST3M753-7DD44 | Saturn Fasteners Inc (USA) |
| MB156-7DD44 PRIMARY | Hi-Shear Corporation (USA) |
| AIC763-7DD44 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 122897-7DD44 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SLB255-7DD44 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| HP7753-7DD44 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| GS1032-7DD44 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 11829-7DD44 | Reid Products Inc. Dba Reid Products Inc (USA) |
| PBF1267-7DD44 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M753-7DD44 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| VFK600-7DD44 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| VS3190-7DD44 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 122897-7DD44 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M753-7DD44 | 5/9 Secondary reference U.S. Government activity |
| ST3M753-7DD44 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M753-7DD44 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| VS3190-7DD44 | 5/9 Secondary reference U.S. Government activity |
| ST3M753-7DD44 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 122897-7DD44 | 5/9 Secondary reference Sps Technologies Inc |
| S343-7DD44 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-201-9027 is a Bolt,shear, manufactured by Huck International, Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-201-9027 has 15 manufacturer part numbers on file: S343-7DD44 (Huck International, Inc), MB156-7DD44 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M753-7DD44 (Houston Precision Fasteners I Lp), ST3M753-7DD44 (Saturn Fasteners Inc), MB156-7DD44 (Hi-Shear Corporation) and 10 more.
Key specifications for S343-7DD44: Extended Washer Thickness: 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Head Height: 0.330 INCHES NOMINAL IN; Fastener Length: 3.565 INCHES MINIMUM AND 3.595 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE 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.