The Bolt,shear, cataloged under National Stock Number 5306-00-727-9648, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-727-9648 |
| Primary Part Number | NAS626H18 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.091 INCHES NOMINAL IN |
| Head Height | 0.388 INCHES NOMINAL IN |
| Fastener Length | 1.729 INCHES MINIMUM AND 1.759 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.644 INCHES NOMINAL IN |
| Thread Length | 0.594 INCHES MINIMUM AND 0.644 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS626 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 6150 OR STEEL COMP 4140 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.055 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| NAS626H18 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS626H18 | Mac Fasteners, Inc. Dba Mac Fasteners Inc (USA) |
| NAS626H18 | Acufast Aircraft Products (USA) |
| NAS626H18 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| NAS626H18 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| NAS626H18 | Aerospace Manufacturing Corporation Dba Aerospace Manufacturing Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS626H18 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5306-00-727-9648 is a Bolt,shear, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-727-9648 has 6 manufacturer part numbers on file: NAS626H18 (Fastener Innovation Technology, Inc. Dba F I T), NAS626H18 (Mac Fasteners, Inc. Dba Mac Fasteners Inc), NAS626H18 (Acufast Aircraft Products), NAS626H18 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), NAS626H18 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 1 more.
Key specifications for NAS626H18: Extended Washer Thickness: 0.091 INCHES NOMINAL IN; Head Height: 0.388 INCHES NOMINAL IN; Fastener Length: 1.729 INCHES MINIMUM AND 1.759 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 25 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.