1-321-802-5889

NSN 5305-00-528-4804

High Torque Screw

About this product

Between 1.015 inches and 1.062 inches fastener length, flat countersunk head style, between 0.502 inches and 0.507 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number 3M123-4-9 for national stock number 5305005284804.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-528-4804.

  • MPN or Model

    3M123-4-9

  • 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 1.015 inches and 1.062 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.502 inches and 0.507 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.552 inches and 0.572 inches
  • Thready Qty Per Inch (tpi)
    28
  • Hardness Rating
    24.0 rockwell c and 44.0 rockwell c
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Stainless steel
  • Thread Series Designator
    Unf
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 5305005284804

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3M123-4-9 Boeing Company, The
HT4N-9 Hi-shear Corporation
HT4N-9 Lisi Aerospace Canada Corp
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