1-321-802-5889

NSN 5305-01-606-5234

High Torque Screw

About this product

1.465 inches fastener length, flat countersunk head style, 0.3988 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number NAS158C4T17 for national stock number 5305016065234.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-606-5234.

  • MPN or Model

    NAS158C4T17

  • 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
    0.403 inches
  • Fastener Length
    1.465 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.3988 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    1.062 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    3700 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5731 assn standard single material response or ams 5732 assn standard single material response or ams 5737 assn standard single material response or ams 5853 assn standard single material 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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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS158C4T17 Cessna Aircraft Company
NAS1581C4T17 Cessna Aircraft Company
NAS1581C4T17 National Aerospace Standards
Stock Check
Availability for this item was last checked on 03/21/23. The quantities and conditions available at the time were:
  • NS: 32
  • NE: 2088
  • AR: 1