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NSN 5305-01-525-0791

High Torque Screw

About this product

Between 1.100 inches and 1.130 inches fastener length, pan head style, between 0.473 inches and 0.492 inches head diameter, head height: between 0.162 inches and 0.175 inches .

Manufacturer part number NAS57704-6 for national stock number 5305015250791.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-525-0791.

  • MPN or Model

    NAS57704-6

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.370 inches
  • Fastener Length
    Between 1.100 inches and 1.130 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.473 inches and 0.492 inches
  • Head Height
    Between 0.162 inches and 0.175 inches
  • Grip Diameter
    Between 0.365 inches and 0.385 inches
  • Internal Drive Style
    Cross recess type 1
  • End Application
    C17 acft
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.730 inches and 0.760 inches
  • Thready Qty Per Inch (tpi)
    28
  • Part Name Assigned By Controlling Agency
    Screw close tolerance
  • Material
    Steel comp 4140
  • Surface Treatment
    Cadmium
  • 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 5305015250791

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS57704-6 National Aerospace Standards
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