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NSN 5305-00-026-2883

High Torque Screw

About this product

Between 0.448 inches and 0.495 inches fastener length, pan head style, 0.328 inches head diameter, head height: between 0.088 inches and 0.102 inches .

Manufacturer part number 51B220-3 for national stock number 5305000262883.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-026-2883.

  • MPN or Model

    51B220-3

  • 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
    0.276 inches
  • Fastener Length
    Between 0.448 inches and 0.495 inches
  • Head Style
    Pan
  • Head Diameter
    0.328 inches
  • Head Height
    Between 0.088 inches and 0.102 inches
  • Grip Diameter
    Between 0.1620 inches and 0.1630 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.164 inches
  • Grip Length
    Between 0.172 inches and 0.202 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    180000 pounds per square inch
  • Material
    Steel comp 4340 or steel comp 4140 or steel comp 8740
  • Surface Treatment
    Cadmium and chromate
  • 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 5305000262883

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
51B220-3 Northrop Grumman Technical Services,
51B220-3 Northrop Grumman Systems Corporation
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