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NSN 5305-00-763-9420

High Torque Screw

About this product

Between 0.426 inches and 0.456 inches fastener length, flat countersunk head style, between 0.390 inches and 0.395 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .

Manufacturer part number HR100-4-2 for national stock number 5305007639420.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-763-9420.

  • MPN or Model

    HR100-4-2

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.247 inches and 0.286 inches
  • Fastener Length
    Between 0.426 inches and 0.456 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.390 inches and 0.395 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 0.109 inches and 0.140 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    100.0 degrees
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Steel comp 4130 or steel comp 4140
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 1, 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 5305007639420

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HR100-4-2 Hi-shear Corporation
HR100-4-2 Lisi Aerospace Canada Corp
HR100-4-2 Hi-shear Corporation
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