The Bolt,shear, cataloged under National Stock Number 5306-01-618-6781, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is John Hassall Llc Dba Sky Aerospace Products. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-618-6781 |
| Primary Part Number | 20-131-1 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | John Hassall Llc Dba Sky Aerospace Products |
| Status | ACTIVE |
| Features Provided | DRY FILM LUBRICANT |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Class | 3A A |
| Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Thread Length | 0.960 INCHES NOMINAL IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Grip Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Head Height | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Hole Quantity | 3 |
| Fastener Length | 1.435 INCHES MINIMUM AND 1.465 INCHES MAXIMUM IN |
| Chamfer Angle | 10.0 DEGREES MINIMUM AND 20.0 DEGREES MAXIMUM |
| Thread Quantity Per Inch | 24 |
| Hole Configuration Style | HEXAGON CORNERS |
| Head Style | HEXAGON |
| Minimum Tensile Strength | 260000 POUNDS PER SQUARE INCH LBS |
| Width Between Flats | 0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Hole Type | DRILLED |
| Material Document and Classification | AMS5844 (UNS R30035) ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material | COBALT COMP MP-35-N OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20-131-1 PRIMARY | John Hassall Llc Dba Sky Aerospace Products (USA) |
| 20-131-1 | Briarwood Fasteners, Inc. (USA) |
| 20-131-1 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 20-131-1 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 20-131-1 PRIMARY | Saturn Fasteners Inc (USA) |
| 20-131-1 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| 20-131-1 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 20-131-1 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| 20-131-1 PRIMARY | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| 20-131-1 | Bell Textron Inc (USA) |
| 20-131-1 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| 20-131-1 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
NSN 5306-01-618-6781 is a Bolt,shear, manufactured by John Hassall Llc Dba Sky Aerospace Products, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-01-618-6781 has 12 cross-referenced part numbers: 20-131-1 (John Hassall Llc Dba Sky Aerospace Products), 20-131-1 (Briarwood Fasteners, Inc.), 20-131-1 (Sps Technologies, Llc Dba PB Fasteners), 20-131-1 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 20-131-1 (Saturn Fasteners Inc) and 7 more.
There are 6 known substitutes for 5306-01-618-6781: 5133-00-065-0980, 5330-00-409-8539, 6640-00-510-8793 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20-131-1: Part Name Assigned by Controlling Agency: BOLT,HEX HEAD, SPECIAL THREAD LENGTHS, COBALT-NICKEL ALLOY MP35N, 260 KSI FTU, (MAST NUT APPLICATIONS); Special Features: THIS BOLT INTENDED TO BE USED FOR PURPOSE OF PROVIDING PRELOAD IN CONJUNCTION WITH A MAST NUT IN ROTOR SYSTEMS SHOULD NOT BE USED IN STANDARD SHEAR/TENSION APPLICATIONS; SEE DRAWING FOR THREAD AND PITCH DETAILS; Features Provided: DRY FILM LUBRICANT; Nominal Thread Diameter: 0.375 INCHES IN. 24 total characteristics are documented in the Federal Logistics Information System.