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NSN 5305-01-165-7547

High Torque Screw

About this product

Between 0.449 inches and 0.479 inches fastener length, flat countersunk head style, between 0.294 inches and 0.332 inches head diameter, grip diameter: between 0.1610 inches and 0.1635 inches .

Manufacturer part number NAS1221-08E2P for national stock number 5305011657547.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-165-7547.

  • MPN or Model

    NAS1221-08E2P

  • 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)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.314 inches and 0.364 inches
  • Fastener Length
    Between 0.449 inches and 0.479 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.294 inches and 0.332 inches
  • Grip Diameter
    Between 0.1610 inches and 0.1635 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.164 inches
  • Grip Length
    Between 0.115 inches and 0.135 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5731 assn standard single material response or ams 5732 assn standard single material response or ams 5737 assn standard single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, ty2 cl2 federal specification single treatment response
  • Thread Series Designator
    Unjc
  • Specification Data
    80205-nas1221 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 5305011657547

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1221-08E2P National Aerospace Standards
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