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NSN 5305-01-437-0678

High Torque Screw

About this product

1.141 inches fastener length, flat countersunk head style, between 0.527 inches and 0.560 inches head diameter, head height: 0.081 inches .

Manufacturer part number VT1631-6-12 for national stock number 5305014370678.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-437-0678.

  • MPN or Model

    VT1631-6-12

  • 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
    0.391 inches
  • Fastener Length
    1.141 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.527 inches and 0.560 inches
  • Head Height
    0.081 inches
  • Grip Diameter
    Between 0.373 inches and 0.374 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.375 inches
  • Grip Length
    0.750 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    100.0 degrees
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Steel comp h11
  • Material Specification
    Ams6485 assn standard single material response or ams6487 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Ams2416 assn standard single treatment response
  • Thread Series Designator
    Unjf
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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 5305014370678

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
VT1631-6-12 Alcoa Global Fasteners, Inc.
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