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NSN 5305-01-440-1345

High Torque Screw

About this product

Between 1.563 inches and 1.593 inches fastener length, flat countersunk head style, between 0.832 inches and 0.890 inches head diameter, grip diameter: between 0.4360 inches and 0.4370 inches .

Manufacturer part number NAS1157E18 for national stock number 5305014401345.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-440-1345.

  • MPN or Model

    NAS1157E18

  • 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)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.453 inches
  • Fastener Length
    Between 1.563 inches and 1.593 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.832 inches and 0.890 inches
  • Grip Diameter
    Between 0.4360 inches and 0.4370 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.438 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Iron alloy 660
  • Material Specification
    Ams5737 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas1157 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 5305014401345

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1157E18 National Aerospace Standards
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