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NSN 5305-00-094-6874

High Torque Screw

About this product

0.835 inches fastener length, fillister countersunk head style, between 0.389 inches and 0.3948 inches head diameter, head height: 0.015 inches .

Manufacturer part number ST3M455-4-7-1 for national stock number 5305000946874.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-094-6874.

  • MPN or Model

    ST3M455-4-7-1

  • 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
    0.326 inches
  • Fastener Length
    0.835 inches
  • Head Style
    Fillister countersunk
  • Head Diameter
    Between 0.389 inches and 0.3948 inches
  • Head Height
    0.015 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    0.438 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Stainless steel
  • 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 5305000946874

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M455-4-7-1 Boeing Company, The
11907-4-7-1 Reid Products Inc.
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