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NSN 5305-01-263-5618

High Torque Screw

About this product

Between 0.642 inches and 0.672 inches fastener length, oval countersunk head style, between 0.3898 inches and 0.3948 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .

Manufacturer part number 3M963-4L3 for national stock number 5305012635618.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-263-5618.

  • MPN or Model

    3M963-4L3

  • 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
    Between 0.444 inches and 0.494 inches
  • Fastener Length
    Between 0.642 inches and 0.672 inches
  • Head Style
    Oval countersunk
  • Head Diameter
    Between 0.3898 inches and 0.3948 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.178 inches and 0.198 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    180000 pounds per square inch
  • Hardness Rating
    39.0 rockwell c and 43.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp 8740
  • Material Specification
    Mil-s-6049 military specification single material response
  • Surface Treatment
    Aluminum
  • Surface Treatment Specification
    Mil-c-83488, type 2 class 3 military specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    76301-3-963 manufacturers standard
More from these suppliers
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 5305012635618

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3M963-4L3 Boeing Company, The
3M963-4L3 Sps Technologies, Llc
3M963-4L3 Arconic Global Fasteners & Rings,
3M963-4L3 Sps Technologies, Llc
3M963-4L3 Abounding Security Inc
3M963-4L3 Huck International, Inc.
3M963-4L3 Huck Intl Inc
3M963-4-3 Boeing Company, The
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