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NSN 5305-00-144-0339

High Torque Screw

About this product

Between 2.551 inches and 2.581 inches fastener length, flat countersunk head style, between 0.295 inches and 0.362 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .

Manufacturer part number 7S37-4-36 for national stock number 5305001440339.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-144-0339.

  • MPN or Model

    7S37-4-36

  • 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 0.291 inches and 0.341 inches
  • Fastener Length
    Between 2.551 inches and 2.581 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.295 inches and 0.362 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches and 0.086 inches first hole
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 2.240 inches and 2.260 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    2.423 inches and 2.473 inches first hole
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Steel comp 4130
  • Material Specification
    Mil-s-6758, cond d4 military specification single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2 cl 3 federal specification single treatment response
  • Thread Series Designator
    Unf
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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 5305001440339

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
7S37-4-36 Boeing Company, The
7S37-4-36 Maney Aircraft, Inc.
7S37-4-36 Smith And Smith Aircraft Co
7S37-4-36 Boeing Company, The
Stock Check
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