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NSN 5305-01-025-4861

High Torque Screw

About this product

Retaining element in threads.

Manufacturer part number MS3369-818 for national stock number 5305010254861.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-025-4861.

  • MPN or Model

    MS3369-818

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.396 inches and 0.447 inches
  • Fastener Length
    Between 1.771 inches and 1.791 inches
  • Head Style
    Crowned hexagon
  • Head Height
    Between 0.251 inches and 0.266 inches
  • Width Between Flats
    Between 0.741 inches and 0.752 inches
  • Grip Diameter
    Between 0.4986 inches and 0.4991 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.116 inches first hole
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.125 inches and 1.141 inches
  • Thready Qty Per Inch (tpi)
    20
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.648 inches first hole
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel comp 630
  • Material Specification
    Ams 5643 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 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 5305010254861

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS3369-818 Military Standards
AS169-8-18 Avibank Mfg., Inc.
MS18115-0818 Military Standards
MS3369-818 Military Standards
AS169-8-18 Avibank Mfg., Inc.
MS18115-0818 Military Standards
Stock Check
Availability for this item was last checked on 11/13/20. The quantities and conditions available at the time were:
  • NE: 1