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NSN 5305-01-520-4446

High Torque Screw

About this product

Between 1.235 inches and 1.265 inches fastener length, flat countersunk head style, between 0.429 inches and 0.479 inches head diameter, grip diameter: between 0.311 inches and 0.312 inches .

Manufacturer part number AIC618-5-20 for national stock number 5305015204446.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-520-4446.

  • MPN or Model

    AIC618-5-20

  • 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 0.476 inches and 0.526 inches
  • Fastener Length
    Between 1.235 inches and 1.265 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.429 inches and 0.479 inches
  • Grip Diameter
    Between 0.311 inches and 0.312 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • End Application
    F-16 acft
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.734 inches and 0.764 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    90.0 degrees
  • Part Name Assigned By Controlling Agency
    Screw-low hd, skirt hd
  • Material
    Steel comp h11
  • Material Specification
    Cda000 assn standard single material response
  • Surface Treatment Specification
    Nas672 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 5305015204446

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
AIC618-5-20 Sps Technologies, Llc
93926-5-20 Sps Technologies, Llc
93926-5-20 Sps Technologies, Llc
VT10021-5-20 Valley-todeco, Inc.
SF116-5-20 Jensen Rolf And Associates
GS1009-5-20 B & B Specialties Inc.
C20645-5-20 Lockheed Martin Corporation
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