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NSN 5305-01-197-6821

High Torque Screw

About this product

Between 0.855 inches and 0.885 inches fastener length, pan no. 2 head style, between 0.456 inches and 0.508 inches head diameter, head height: 0.111 inches .

Manufacturer part number NAS4604U8 for national stock number 5305011976821.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-197-6821.

  • MPN or Model

    NAS4604U8

  • 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
    0.370 inches
  • Fastener Length
    Between 0.855 inches and 0.885 inches
  • Head Style
    Pan no. 2
  • Head Diameter
    Between 0.456 inches and 0.508 inches
  • Head Height
    0.111 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    Tri-wing recess
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.490 inches and 0.510 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Material
    Steel comp 3140
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas4600 professional/industrial association standard
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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 5305011976821

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS4604U8 National Aerospace Standards
NAS4604U8 National Aerospace Standards
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