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NSN 5305-01-352-0625

High Torque Screw

About this product

Between 1.815 inches and 1.845 inches fastener length, flat countersunk head style, between 0.951 inches and 1.014 inches head diameter, grip diameter: between 0.4985 inches and 0.4990 inches .

Manufacturer part number NAS1580C8H17 for national stock number 5305013520625.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-352-0625.

  • MPN or Model

    NAS1580C8H17

  • 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
    0.768 inches
  • Fastener Length
    Between 1.815 inches and 1.845 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.951 inches and 1.014 inches
  • Grip Diameter
    Between 0.4985 inches and 0.4990 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.052 inches and 1.072 inches
  • Thready Qty Per Inch (tpi)
    20
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Stainless steel
  • 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 5305013520625

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1580C8H17 National Aerospace Standards
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