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NSN 5305-01-548-8204

High Torque Screw

About this product

Head has offset cruciform recess per ms33781; cruciform max dia 0.219 inches; additional mdcl mil-s-6049.

Manufacturer part number NAS1143-7P for national stock number 5305015488204.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-548-8204.

  • MPN or Model

    NAS1143-7P

  • 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
    0.276 inches
  • Fastener Length
    Between 0.699 inches and 0.729 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.361 inches and 0.385 inches
  • Head Height
    Between 0.103 inches and 0.118 inches
  • Grip Diameter
    Between 0.188 inches and 0.189 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.438 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Material
    Steel comp 4140 and steel comp 4340 and steel comp e4340 and steel comp 6150 and steel comp 8735 and steel comp 8740
  • Material Specification
    Mil-s-5626 military specification 1st material response and mil-s-5000 military specification 2nd material response and mil-s-8503 military specification 3rd material response and mil-s-6098 military specification 4th material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, ty2cl2 federal specification all treatment responses
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas1143 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 5305015488204

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1143-7P National Aerospace Standards
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