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NSN 5305-01-545-5809

High Torque Screw

About this product

Between 0.667 inches and 0.697 inches fastener length, flat countersunk head style, between 0.456 inches and 0.508 inches head diameter, grip diameter: 0.249 inches .

Manufacturer part number NAS7504U5 for national stock number 5305015455809.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-545-5809.

  • MPN or Model

    NAS7504U5

  • 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 0.667 inches and 0.697 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.456 inches and 0.508 inches
  • Grip Diameter
    0.249 inches
  • Internal Drive Style
    Cross recess type 1
  • End Application
    Rq-4a
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.302 inches and 0.322 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Part Name Assigned By Controlling Agency
    Bolt, 100 degrees head, cruciform recess, close tolerance, a2
  • Material
    Iron alloy 660
  • Material Specification
    Ams5731 assn standard 1st material response or ams5732 assn standard 1st material response or ams5737 assn standard 1st material response or ams5738 assn standard 1st material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification 1st 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 5305015455809

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS7504U5 National Aerospace Standards
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