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NSN 5305-01-612-4820

High Torque Screw

About this product

Pan head, close tol, short thd, offset cruciform.

Manufacturer part number NAS1132E21 for national stock number 5305016124820.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-612-4820.

  • MPN or Model

    NAS1132E21

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.276 inches
  • Fastener Length
    1.588 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.306 inches and 0.322 inches
  • Head Height
    Between 0.105 inches and 0.188 inches
  • Grip Diameter
    Between 0.1621 inches and 0.1627 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • End Application
    A400m aircraft
  • Thread Diameter
    0.1640 inches
  • Grip Length
    1.5604 inches
  • Thready Qty Per Inch (tpi)
    32
  • Part Name Assigned By Controlling Agency
    Machine
  • Material
    Iron alloy 660
  • Surface Treatment
    Passivate
  • Thread Series Designator
    Unjc
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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 5305016124820

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1132E21 National Aerospace Standards
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