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NSN 5305-01-255-6554

High Torque Screw

About this product

Between 0.573 inches and 0.603 inches fastener length, pan head style, between 0.256 inches and 0.270 inches head diameter, head height: between 0.087 inches and 0.097 inches .

Manufacturer part number NAS1131-5P for national stock number 5305012556554.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-255-6554.

  • MPN or Model

    NAS1131-5P

  • 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
    Between 0.251 inches and 0.301 inches
  • Fastener Length
    Between 0.573 inches and 0.603 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.256 inches and 0.270 inches
  • Head Height
    Between 0.087 inches and 0.097 inches
  • Grip Diameter
    Between 0.1365 inches and 0.1375 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.138 inches
  • Grip Length
    Between 0.302 inches and 0.322 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp 4140 or steel comp e4340 or steel comp 8740
  • Material Specification
    Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2 cl 2 federal specification single treatment response
  • Thread Series Designator
    Unjc
  • Specification Data
    80205-nas1131 professional/industrial association standard
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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 5305012556554

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1131-5P National Aerospace Standards
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