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NSN 5305-00-537-3523

High Torque Screw

About this product

2.157 inches fastener length, flat countersunk head style, between 0.497 inches and 0.507 inches head diameter, grip diameter: between 0.2483 inches and 0.2492 inches .

Manufacturer part number NAS334CFA21 for national stock number 5305005373523.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-537-3523.

  • MPN or Model

    NAS334CFA21

  • 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
    0.469 inches
  • Fastener Length
    2.157 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2483 inches and 0.2492 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.250 inches
  • Grip Length
    1.688 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    32.0 microinches top of head
  • Material
    Steel
  • Surface Treatment
    Cadmium grip
  • Surface Treatment Specification
    Qq-p-416, type 2 class 3 federal specification single treatment response grip
  • Thread Series Designator
    Unf
  • Specification Data
    80205-nas333 through 340 professional/industrial association standard
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 5305005373523

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS334CFA21 Bureau Of Prisons
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