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NSN 5305-01-456-0175

High Torque Screw

About this product

Between 0.598 inches and 0.628 inches fastener length, flat countersunk head style, between 0.346 inches and 0.399 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .

Manufacturer part number NAS1994T3H for national stock number 5305014560175.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-456-0175.

  • MPN or Model

    NAS1994T3H

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    093490 - Bolt/nut/screw/clips/fastener/etc
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.400 inches and 0.450 inches
  • Fastener Length
    Between 0.598 inches and 0.628 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.346 inches and 0.399 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.178 inches and 0.198 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams 4971 assn standard single material response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas1994 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 5305014560175

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1994T3H National Aerospace Standards
NAS1994TEH National Aerospace Standards
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