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NSN 5305-00-945-8589

High Torque Screw

About this product

Between 1.301 inches and 1.348 inches fastener length, round head style, between 0.464 inches and 0.488 inches head diameter, head height: between 0.133 inches and 0.150 inches .

Manufacturer part number 51B222-16 for national stock number 5305009458589.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-945-8589.

  • MPN or Model

    51B222-16

  • 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
    0.316 inches
  • Fastener Length
    Between 1.301 inches and 1.348 inches
  • Head Style
    Round
  • Head Diameter
    Between 0.464 inches and 0.488 inches
  • Head Height
    Between 0.133 inches and 0.150 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 0.985 inches and 1.015 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    180000 pounds per square inch
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel
  • Material Specification
    Mil-s-5000 military specification single material response or mil-s-6049 military specification single material response or mil-s-5626 military specification single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416 type 2 cl 3 federal specification single treatment response
  • 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 5305009458589

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
51B222-16 Northrop Grumman Technical Services,
51B222-16 Northrop Grumman Systems Corporation
51B222-16 Northrop Grumman Systems Corporation
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