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NSN 5305-00-292-5490

High Torque Screw

About this product

Furnished with o ring.

Manufacturer part number HT42UA21 for national stock number 5305002925490.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-292-5490.

  • MPN or Model

    HT42UA21

  • 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 0.443 inches and 0.510 inches
  • Fastener Length
    Between 1.765 inches and 1.812 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.501 inches and 0.506 inches
  • Head Height
    Between 0.058 inches and 0.060 inches
  • Grip Diameter
    Between 0.2797 inches and 0.2807 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    100.0 degrees
  • Material
    Steel
  • Surface Treatment
    Cadmium
  • Thread Series Designator
    Unf
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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 5305002925490

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT42UA21 Hi-shear Corporation
HT410A4-21 Alcoa Global Fasteners, Inc.
HT42UA21 Lisi Aerospace Canada Corp
3M54-4-21 Boeing Company, The
54268-4-21 Sps Technologies Inc Unbrako Div
Stock Check
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