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NSN 5305-01-494-8113

High Torque Screw

About this product

Between 1.740 inches and 1.760 inches fastener length, flat countersunk undercut head style, between 0.575 inches and 0.635 inches head diameter, head height: between 0.088 inches and 0.090 inches .

Manufacturer part number HT4020-5-20 for national stock number 5305014948113.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-494-8113.

  • MPN or Model

    HT4020-5-20

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.505 inches and 0.572 inches
  • Fastener Length
    Between 1.740 inches and 1.760 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.575 inches and 0.635 inches
  • Head Height
    Between 0.088 inches and 0.090 inches
  • Grip Diameter
    Between 0.3115 inches and 0.3120 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.3125 inches
  • Grip Length
    Between 1.240 inches and 1.260 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    99.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Steel comp xm-13
  • Material Specification
    Ams 5629 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification 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 5305014948113

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4020-5-20 Huck International, Inc.
ST3M652C5-20D Boeing Company, The
ST3M625C5-20D Arconic Global Fasteners & Rings,
ST3M625C5-20D Huck International, Inc.
ST3M625C5-20D Fastener Innovation Technology, Inc.
11925C5-20D Reid Products Inc.
ST3M625C5-20D West Coast Aerospace Inc
HT4020-5-20 Hi-shear Corporation
HT4020-5-20 Sps Technologies, Llc
HT4020-5-20 Alcoa Global Fasteners, Inc.
HT4020-5-20 Sps Technologies Ltd Tj Brooks
HT4020-5-20 Lisi Aerospace Canada Corp
HT4020-5-20 Sps Technologies Inc
HT4020-5-20 Huck Intl Inc
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