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NSN 5305-01-589-0674

High Torque Screw

About this product

Non-bearing head surface coated w/light blue kykem, color number 15526 per fed-std-595.

Manufacturer part number HT4027-6 for national stock number 5305015890674.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-589-0674.

  • MPN or Model

    HT4027-6

  • Schedule B
    7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire))
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.626 inches and 0.656 inches
  • Fastener Length
    0.641 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    0.564 inches
  • Head Height
    0.081 inches
  • Grip Diameter
    0.374 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.373 inches
  • Grip Length
    0.375 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Nickel alloy 718
  • Material Specification
    Ams5662 assn standard all material responses
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Ams 2700 method 1 assn standard single treatment response
  • Thread Series Designator
    Unjf
More from these suppliers
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 5305015890674

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4027-6 Sps Technologies, Llc
ST3M557-6-6 Boeing Company, The
W04027-6-6 West Coast Aerospace Inc
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