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NSN 5305-00-279-9073

High Torque Screw

About this product

Between 1.265 inches and 1.312 inches fastener length, flat countersunk head style, between 0.629 inches and 0.634 inches head diameter, grip diameter: between 0.3112 inches and 0.3120 inches .

Manufacturer part number HT5A12 for national stock number 5305002799073.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-279-9073.

  • MPN or Model

    HT5A12

  • 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 0.505 inches and 0.572 inches
  • Fastener Length
    Between 1.265 inches and 1.312 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.629 inches and 0.634 inches
  • Grip Diameter
    Between 0.3112 inches and 0.3120 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.740 inches and 0.760 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    100.0 degrees
  • Material
    Steel comp 431
  • Material Specification
    Mil-s-18732 military specification single material response
  • Thread Series Designator
    Unf
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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 5305002799073

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT5A12 Lisi Aerospace Canada Corp
HT5A12 Hi-shear Corporation
HT5A12 Alcoa Fastening Systems
HT5E12 Hi-shear Corporation
Stock Check
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