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NSN 5305-01-625-0888

High Torque Screw

About this product

Between 1.548 inches and 1.578 inches fastener length, flat countersunk head style, between 0.429 inches and 0.477 inches head diameter, grip diameter: between 0.3110 inches and 0.3120 inches .

Manufacturer part number NAS8605D18 for national stock number 5305016250888.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-625-0888.

  • MPN or Model

    NAS8605D18

  • 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
    0.438 inches
  • Fastener Length
    Between 1.548 inches and 1.578 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.429 inches and 0.477 inches
  • Grip Diameter
    Between 0.3110 inches and 0.3120 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches and 0.081 inches all holes
  • Internal Drive Style
    Cruciform ribbed
  • Thread Diameter
    0.3125 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp 4140 or steel comp 4340 or steel comp 8740
  • Material Specification
    Ams6382 assn standard 1st material response or ams6415 assn standard 2nd material response or ams6484 assn standard 2nd material response or ams6322 assn standard 3rd material response or ams6325 assn standard 3rd material response or ams6327 assn standard 3rd material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Ams-qq-p-416, type 2, class 2 assn standard single treatment response
  • 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 5305016250888

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS8605D18 National Aerospace Standards
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