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NSN 5305-01-373-8725

High Torque Screw

About this product

Between 2.234 inches and 2.354 inches fastener length, flat countersunk head style, between 0.612 inches and 0.672 inches head diameter, grip diameter: between 0.4365 inches and 0.4370 inches .

Manufacturer part number ST3M455-7L27 for national stock number 5305013738725.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-373-8725.

  • MPN or Model

    ST3M455-7L27

  • 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 0.556 inches and 0.656 inches
  • Fastener Length
    Between 2.234 inches and 2.354 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.612 inches and 0.672 inches
  • Grip Diameter
    Between 0.4365 inches and 0.4370 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.4375 inches
  • Grip Length
    Between 1.678 inches and 1.698 inches
  • Thready Qty Per Inch (tpi)
    20
  • Countersink Angle
    100.0 radians
  • Material
    Steel comp xm-13
  • Material Specification
    Ams 5629 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 5305013738725

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M455-7L27 Boeing Company, The
ST3M455-7L27 Arconic Global Fasteners & Rings,
ST3M455-7L27 Huck International, Inc.
11907-7L27 Reid Products Inc.
ST3M455-7L27 Hi-shear Corporation
ST3M455-7L27 Sps Technologies, Llc
ST3M455-7L27 Sps Technologies Ltd Tj Brooks
ST3M455-7L27 Lisi Aerospace Canada Corp
ST3M455-7L27 Sps Technologies Inc
ST3M455 Boeing Company, The
Stock Check
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