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NSN 5305-01-261-1901

High Torque Screw

About this product

0.0156 in. Oversize shank for repair work only.

Manufacturer part number 51B335-9X for national stock number 5305012611901.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-261-1901.

  • MPN or Model

    51B335-9X

  • 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 0.365 inches and 0.385 inches
  • Fastener Length
    Between 0.928 inches and 0.948 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.626 inches and 0.635 inches
  • Grip Diameter
    Between 0.326 inches and 0.327 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.553 inches and 0.573 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    100.0 degrees
  • Material
    Steel comp 4340 or steel comp 4140 or steel comp 8740
  • Material Specification
    Mil-s-5000 military specification 1st material response or mil-s-5626 military specification 2nd material response or mil-s-6049 military specification 3rd material response
  • Surface Treatment
    Chromium
  • Surface Treatment Specification
    Qq-p-416, type 2, class 2 federal specification single treatment response
  • 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 5305012611901

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
51B335-9X Northrop Grumman Technical Services,
51B335-9X Sps Technologies, Llc
51B335-9X Arconic Global Fasteners & Rings,
51B335-9X Sps Technologies, Llc
51B335-9X Hi-shear Corporation
51B335-9X Sps Technologies, Llc
51B335-9X Alcoa Global Fasteners, Inc.
51B335-9X Lisi Aerospace Canada Corp
51B335-9X Northrop Grumman Systems Corporation
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