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NSN 5305-01-591-0128

High Torque Screw

About this product

Head has a 1.40 deg radius dome.

Manufacturer part number HT4027-3D6 for national stock number 5305015910128.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-591-0128.

  • MPN or Model

    HT4027-3D6

  • 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
    0.406 inches
  • Fastener Length
    Between 0.579 inches and 0.609 inches
  • Head Style
    Fillister countersunk
  • Head Diameter
    Between 0.297 inches and 0.302 inches
  • Head Height
    0.013 inches
  • Grip Diameter
    0.189 mils and 0.190 centimeters
  • Point Length
    0.039 inches
  • Shank Unthreaded Hole Diameter
    0.070 mils first hole and 0.075 centimeters first hole
  • Point Style
    Flat
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.188 inches
  • Thready Qty Per Inch (tpi)
    32
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    0.473 inches first hole and 0.483 inches first hole
  • Point Chamfer Angle
    45.0 of standard range single treatment response
  • Part Name Assigned By Controlling Agency
    Screw-close tolerance, 100 degrees countersunk, reduced head, hi-torque, non-magnetic cres (135 ksi fsu)
  • Material
    Nickel alloy 718
  • Material Specification
    Ams 5662 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Ams 2700 assn standard 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 5305015910128

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4027-3D6 Arconic Global Fasteners & Rings,
HT4027-3D6 Sps Technologies, Llc
HT4027-3D6 Huck International, Inc.
ST3M557-3D6 Boeing Company, The
ST3M447-3D6 Valley-todeco, Inc.
ST3M557-3D6 Saturn Fasteners Inc
ST3M557-3D6 Heartland Precision Fasteners, Inc.
ST3M557-3D6 Houston Precision Fasteners I, Lp
HT4027-3D6 Sps Technologies, Llc
ST3M557-3D6 Camcar Llc
HT4027-3D6 Sps Technologies, Llc
11923-3D6 Reid Products Inc.
WC4027-3D6 West Coast Aerospace Inc
HT4027-3D6 Hi-shear Corporation
HT4027-3D6 Sps Technologies, Llc
HT4027-3D6 Alcoa Global Fasteners, Inc.
HT4027-3D6 Lisi Aerospace Canada Corp
ST3M557-3D6 Linread Ltd
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