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NSN 5305-01-229-8020

High Torque Screw

About this product

Retaining element on shank.

Manufacturer part number MS27577-8-22 for national stock number 5305012298020.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-229-8020.

  • MPN or Model

    MS27577-8-22

  • 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)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.630 inches and 0.666 inches
  • Fastener Length
    Between 2.021 inches and 2.041 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.959 inches and 1.017 inches
  • Grip Diameter
    Between 0.4982 inches and 0.4991 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.116 inches first hole
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.375 inches and 1.391 inches
  • Thready Qty Per Inch (tpi)
    20
  • Hardness Rating
    36.0 rockwell c and 41.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.765 inches first hole and 1.785 inches first hole
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel comp 4340 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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Close Tolerance Screw

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Mechanic Bill explains High Torque Screw

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NSN 5305012298020

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS27577-8-22 National Aerospace Standards
MS27577-8-22 Military Standards
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