NSN 5306-01-189-3775
Close Tolerance Hex Head Bolt
Between 3.231 inches and 3.251 inches fastener length, dished hexagon head style, between 0.126 inches and 0.141 inches head height, width between flats: between 0.430 inches and 0.439 inches .
Manufacturer part number MS27576-4-45 for national stock number 5306011893775.
Datasheet
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Product description
Close Tolerance Bolt NSN 5306-01-189-3775.
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MPN or Model
MS27576-4-45
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Schedule B
7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment) -
NMF (National Motor Freight)
093486 - Bolts, Nuts Or Screws, NOI (sub 3) -
Unit Weight (Est.)
0.1 lb -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 0.283 inches and 0.334 inches -
Fastener Length
Between 3.231 inches and 3.251 inches -
Head Style
Dished hexagon -
Head Height
Between 0.126 inches and 0.141 inches -
Width Between Flats
Between 0.430 inches and 0.439 inches -
Locking Feature
Detent ring grip -
Grip Diameter
Between 0.2483 inches and 0.2492 inches -
Shank Unthreaded Hole Diameter
0.076 inches first hole and 0.086 inches first hole -
Thread Diameter
0.250 inches -
Grip Length
Between 2.812 inches and 2.828 inches -
Thready Qty Per Inch (tpi)
28 -
Hardness Rating
36.0 rockwell c and 41.0 rockwell c -
Distance From Head Largest Bearing Surface To Shank Hole Center
3.131 inches first hole and 3.161 inches first hole -
Surface Finish
63.0 microinches grip -
Material
Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 4130 or steel comp 6150 -
Surface Treatment
Cadmium and chromate -
Surface Treatment Specification
Qq-p-416, type 2 cl 2 federal specification single treatment response -
Thread Series Designator
Unjf
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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 5306-01-189-3775 close tolerance boltManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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MS27576-4-45 | National Aerospace Standards |
MS27576-4-45 | Military Standards |
Stock Check
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