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NSN 5305-00-434-5487

High Torque Screw

About this product

Conical surface of head 32 microinches.

Manufacturer part number 3M379-4-13 for national stock number 5305004345487.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-434-5487.

  • MPN or Model

    3M379-4-13

  • 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
    0.316 inches
  • Fastener Length
    Between 1.113 inches and 1.143 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole and 0.086 inches first hole
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.802 inches and 0.822 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
    1.010 inches first hole
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel
  • Material Specification
    Nas 498 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 2, class 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 5305004345487

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3M379-4-13 Boeing Company, The
HT187-4-13 Alcoa Fastening Systems
HT8076-4-13 Alcoa Fastening Systems
69197-4-13 Sps Technologies, Llc
HT187-4-13 Hi-shear Corporation
HT8076-4-13 Alcoa Global Fasteners, Inc.
HT187-4-13 Lisi Aerospace Canada Corp
3M379-4-13 Wesco Aircraft Hardware Corp.
HT187-4-13 Satair A/s
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