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NSN 5305-01-591-2238

High Torque Screw

About this product

Between 2.314 inches and 2.344 inches fastener length, fillister countersunk head style, between 0.510 inches and 0.564 inches head diameter, head height: 0.018 inches .

Manufacturer part number HT4027-6-27 for national stock number 5305015912238.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-591-2238.

  • MPN or Model

    HT4027-6-27

  • 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
    0.641 inches
  • Fastener Length
    Between 2.314 inches and 2.344 inches
  • Head Style
    Fillister countersunk
  • Head Diameter
    Between 0.510 inches and 0.564 inches
  • Head Height
    0.018 inches
  • Grip Diameter
    0.374 mils and 0.375 centimeters
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.375 inches
  • Grip Length
    1.678 mils and 1.698 centimeters
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Part Name Assigned By Controlling Agency
    Screw-close tolerance, 100 degrees countersunk, reduced head, hi-torque, non-magnetic cres (125 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 5305015912238

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4027-6-27 Sps Technologies, Llc
HT4027-6-27 Huck International, Inc.
WC4027-6-27 West Coast Aerospace Inc
ST3M557-6-27 Boeing Company, The
ST3M557-6-27 Valley-todeco, Inc.
HT4027-6-27 Arconic Global Fasteners & Rings,
ST3M557-6-27 Saturn Fasteners Inc
ST3M557-6-27 Heartland Precision Fasteners, Inc.
ST3M557-6-27 Houston Precision Fasteners I, Lp
HT4027-6-27 Sps Technologies, Llc
ST3M557-6-27 Camcar Llc
HT4027-6-27 Sps Technologies, Llc
11923-6-27 Reid Products Inc.
HT4027-6-27 Hi-shear Corporation
HT4027-6-27 Sps Technologies, Llc
HT4027-6-27 Alcoa Global Fasteners, Inc.
ST3M557-6-27 Linread Ltd
HT4027-6-27 Lisi Aerospace Canada Corp
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