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NSN 5305-01-136-8351

High Torque Screw

About this product

Between 2.051 inches and 2.081 inches fastener length, flat countersunk head style, between 0.497 inches and 0.507 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number HT4049-4D28 for national stock number 5305011368351.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-136-8351.

  • MPN or Model

    HT4049-4D28

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.291 inches and 0.341 inches
  • Fastener Length
    Between 2.051 inches and 2.081 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole and 0.081 inches first hole
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.740 inches and 1.760 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.928 inches first hole and 1.968 inches first hole
  • 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
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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 5305011368351

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4049-4D28 Arconic Global Fasteners & Rings,
HT4049-4D28 Huck International, Inc.
ST3M714-4D28 Fastener Innovation Technology, Inc.
WC4049-4D28 West Coast Aerospace Inc
HT4049-4D28 Sps Technologies Ltd Tj Brooks
HT4049-4D28 Hi-shear Corporation
HT4049-4D28 Sps Technologies, Llc
HT4049-4D28 Lisi Aerospace Canada Corp
ST3M714-4D28 Alcoa Global Fasteners, Inc.
ST3M714-4D28 Boeing Company, The
HT4049-4D28 Huck Intl Inc
HT4049-4D28 Alcoa Global Fasteners, Inc.
Stock Check
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