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NSN 5305-01-250-0639

High Torque Screw

About this product

Between 1.573 inches and 1.603 inches fastener length, flat countersunk head style, between 0.376 inches and 0.385 inches head diameter, grip diameter: between 0.1890 inches and 0.1895 inches .

Manufacturer part number HT4049-3-21 for national stock number 5305012500639.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-250-0639.

  • MPN or Model

    HT4049-3-21

  • 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.)
    0.2 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.251 inches and 0.301 inches
  • Fastener Length
    Between 1.573 inches and 1.603 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.376 inches and 0.385 inches
  • Grip Diameter
    Between 0.1890 inches and 0.1895 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Thready Qty Per Inch (tpi)
    32
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • 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 5305012500639

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4049-3-21 Huck International, Inc.
ST3M714-3-21 Fastener Innovation Technology, Inc.
ST3M714-3-21 West Coast Aerospace Inc
HT4049-3-21 Hi-shear Corporation
HT4049-3-21 Lisi Aerospace Canada Corp
HT4049-3-21 Arconic Global Fasteners & Rings,
WC4049-3-21 West Coast Aerospace Inc
ST3M714-3-21 Hi-shear Corporation
ST3M714-3-21 Sps Technologies, Llc
ST3M714-3-21 Lisi Aerospace Canada Corp
ST3M714-3-21 Boeing Company, The
HT4049-3-21 Sps Technologies, Llc
HT4049-3-21 Huck Intl Inc
ST3M714-3-21 Alcoa Global Fasteners, Inc.
HT4049-3-21 Alcoa Global Fasteners, Inc.
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