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NSN 5305-01-397-1784

High Torque Screw

About this product

Between 1.110 inches and 1.140 inches fastener length, flat countersunk head style, between 0.297 inches and 0.302 inches head diameter, grip diameter: between 0.1885 inches and 0.1895 inches .

Manufacturer part number 3M926-3L18 for national stock number 5305013971784.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-397-1784.

  • MPN or Model

    3M926-3L18

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.406 inches
  • Fastener Length
    Between 1.110 inches and 1.140 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.297 inches and 0.302 inches
  • Grip Diameter
    Between 0.1885 inches and 0.1895 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp xm-13
  • Surface Treatment
    Aluminum
  • Surface Treatment Specification
    Amil-c-83488, type 2, class 3 military specification 3rd 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 5305013971784

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3M926-3L18 Boeing Company, The
3M926-3L18 Huck International, Inc.
3M926-3L18 Sps Technologies, Llc
HT4068-3-18A Hi-shear Corporation
3M926-3L18 Alcoa Global Fasteners, Inc.
HT4068-3-18A Lisi Aerospace Canada Corp
11883-3L18 Reid Products Inc.
3M926-3L18 Sps Technologies Ltd Tj Brooks
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