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NSN 5305-01-507-4373

High Torque Screw

About this product

Between 3.7035 inches and 3.7335 inches fastener length, flat countersunk head style, 0.838 inches head diameter, hole diameter: between 0.141 inches and 0.146 inches .

Manufacturer part number ST3M557-9D45 for national stock number 5305015074373.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-507-4373.

  • MPN or Model

    ST3M557-9D45

  • Schedule B
    7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire))
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.906 inches
  • Fastener Length
    Between 3.7035 inches and 3.7335 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.838 inches
  • Hole Diameter
    Between 0.141 inches and 0.146 inches
  • Grip Diameter
    Between 0.5610 inches and 0.5615 inches
  • Internal Drive Style
    High-torque
  • End Application
    Landing gear
  • Thread Diameter
    0.5625 inches
  • Grip Length
    Between 2.8025 inches and 2.8225 inches
  • Hole Quantity
    1
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    18
  • Hole Configuration Style
    Round
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Nickel alloy 718
  • Material Specification
    Ams 5662 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification single treatment response
  • Thread Series Designator
    Unjf
More from these suppliers
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 5305015074373

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M557-9D45 Boeing Company, The
ST3M557-9D45 Houston Precision Fasteners I, Lp
HT4027-9D45 Hi-shear Corporation
HT4027-9D45 Sps Technologies, Llc
HT4027-9D45 Sps Technologies, Llc
ST3M557-9D45 Fastener Innovation Technology, Inc.
HT4027-9D45 Lisi Aerospace Canada Corp
ST3M557 Boeing Company, The
Stock Check
Availability for this item was last checked on 03/09/23. The quantities and conditions available at the time were:
  • NE: 1