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NSN 5305-01-019-0837

High Torque Screw

About this product

Between 1.570 inches and 1.600 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 ST3M680-4D19 for national stock number 5305010190837.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-019-0837.

  • MPN or Model

    ST3M680-4D19

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.397 inches
  • Fastener Length
    Between 1.570 inches and 1.600 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 1.178 inches and 1.198 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    100.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.469 inches first hole and 1.479 inches first hole
  • Material
    Stainless steel
  • Surface Treatment
    Passivate
  • 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 5305010190837

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M680-4D19 Boeing Company, The
HT4036-4D19 Hi-shear Corporation
HT4036-4D19 Sps Technologies, Llc
HT4036-4D19 Alcoa Global Fasteners, Inc.
HT4036-4D19 Lisi Aerospace Canada Corp
HT4036-4D19 Alcoa Fastening Systems
HT4036-4D19 Huck International, Inc.
HT4036-4D19 Sps Technologies, Llc
HT4036-4D19 Satair A/s
HT4036-4D19 Huck Intl Inc
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