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NSN 5305-00-721-5770

High Torque Screw

About this product

1.531 inches fastener length, fillister head style, 0.188 inches head diameter, head height: 0.064 inches .

Manufacturer part number S1665-61769-1 for national stock number 5305007215770.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-721-5770.

  • MPN or Model

    S1665-61769-1

  • 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
    0.256 inches
  • Fastener Length
    1.531 inches
  • Head Style
    Fillister
  • Head Diameter
    0.188 inches
  • Head Height
    0.064 inches
  • Grip Diameter
    Between 0.1245 inches and 0.1247 inches
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.125 inches
  • Grip Length
    1.275 inches
  • Thready Qty Per Inch (tpi)
    40
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Hardness Rating
    26.0 rockwell c and 33.0 rockwell c
  • Surface Finish
    100.0 microinches
  • Material
    Steel comp 4130
  • Surface Treatment
    Cadmium or cadmium and chromate or cadmium and phosphate or oxide
  • Thread Series Designator
    Unc
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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 5305007215770

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
S1665-61769-1 Sikorsky Aircraft Corporation
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