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NSN 5305-01-591-0195

High Torque Screw

About this product

Item has a dry film lube applied to the shank and the threads only with 100 percent coverage of threads and 80 to 100 percent coverage of the shank length.

Manufacturer part number HT4027-7-12M for national stock number 5305015910195.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-591-0195.

  • MPN or Model

    HT4027-7-12M

  • 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
    0.656 inches
  • Fastener Length
    Between 1.641 inches and 1.671 inches
  • Head Style
    Fillister countersunk
  • Head Diameter
    Between 0.612 inches and 0.672 inches
  • Head Height
    0.020 inches
  • Grip Diameter
    0.437 inches
  • Point Length
    0.062 inches
  • Point Style
    Flat
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.438 inches
  • Grip Length
    1.000 inches
  • Thready Qty Per Inch (tpi)
    20
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • 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 (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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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4027-7-12M Arconic Global Fasteners & Rings,
HT4027-7-12M Sps Technologies, Llc
HT4027-7-12M Huck International, Inc.
ST3M557-7-12M Boeing Company, The
ST3M557-7-12M Valley-todeco, Inc.
ST3M557-7-12M Saturn Fasteners Inc
ST3M557-7-12M Heartland Precision Fasteners, Inc.
ST3M557-7-12M Houston Precision Fasteners I, Lp
HT4027-7-12M Sps Technologies, Llc
ST3M557-7-12M Camcar Llc
HT4027-7-12M Sps Technologies, Llc
11923-7-12M Reid Products Inc.
WC4027-7-12M West Coast Aerospace Inc
HT4027-7-12M Hi-shear Corporation
HT4027-7-12M Sps Technologies, Llc
HT4027-7-12M Alcoa Global Fasteners, Inc.
ST3M557-7-12M Linread Ltd
HT4027-7-12M Lisi Aerospace Canada Corp
Stock Check
Availability for this item was last checked on 09/30/22. The quantities and conditions available at the time were:
  • NE: 3