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NSN 5305-01-498-7850

High Torque Screw

About this product

1.266 inches fastener length, flat countersunk head style, 0.510 inches head diameter, grip diameter: between 0.373 inches and 0.374 inches .

Manufacturer part number NAS8706-13 for national stock number 5305014987850.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-498-7850.

  • MPN or Model

    NAS8706-13

  • 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
    0.454 inches
  • Fastener Length
    1.266 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.510 inches
  • Grip Diameter
    Between 0.373 inches and 0.374 inches
  • Internal Drive Style
    Cross recess type 1
  • End Application
    F-22 raptor
  • Thread Diameter
    0.375 inches
  • Grip Length
    0.812 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    100.0 degrees
  • Part Name Assigned By Controlling Agency
    Bolt, 100 degrees reduced head, phillips recess, close tolerance, a-286, short thread
  • Material
    Iron alloy 660
  • 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 5305014987850

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS8706-13 National Aerospace Standards
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