NSN 5306-01-188-5777
Close Tolerance Hex Head Bolt
Between 2.138 inches and 2.168 inches fastener length, undercut hexagon head style, between 0.250 inches and 0.265 inches head height, width between flats: between 0.741 inches and 0.752 inches .
Manufacturer part number NAS6408U26D for national stock number 5306011885777.
Datasheet
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Product description
Close Tolerance Bolt NSN 5306-01-188-5777.
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MPN or Model
NAS6408U26D
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Schedule B
8109.90.0000 (Zirconium and articles thereof nesoi) -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
0.528 inches -
Fastener Length
Between 2.138 inches and 2.168 inches -
Head Style
Undercut hexagon -
Head Height
Between 0.250 inches and 0.265 inches -
Width Between Flats
Between 0.741 inches and 0.752 inches -
Grip Diameter
Between 0.4990 inches and 0.4995 inches -
Shank Unthreaded Hole Diameter
0.106 inches first hole and 0.116 inches first hole -
Thread Diameter
0.500 inches -
Grip Length
Between 1.615 inches and 1.635 inches -
Thready Qty Per Inch (tpi)
20 -
Distance From Head Largest Bearing Surface To Shank Hole Center
1.945 inches first hole and 1.965 inches first hole -
Material
Titanium alloy -
Material Specification
Ams 4928, 6al-4v assn standard single material response or ams 4967, 6al-4v assn standard single material response -
Thread Series Designator
Unjf -
Specification Data
80205-nas6408 professional/industrial association standard
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An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
![Mechanic Bill explains Close Tolerance Hex Head Bolt](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 5306-01-188-5777 close tolerance boltManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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NAS6408U26D | National Aerospace Standards |
Stock Check
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