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NSN 5305-01-521-8876

High Torque Screw

About this product

Between 0.579 inches and 0.609 inches fastener length, fillister countersunk head style, between 0.2966 inches and 0.3016 inches head diameter, head height: 0.013 inches .

Manufacturer part number ST3M557-3D3 for national stock number 5305015218876.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-521-8876.

  • MPN or Model

    ST3M557-3D3

  • 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
    Between 0.381 inches and 0.431 inches
  • Fastener Length
    Between 0.579 inches and 0.609 inches
  • Head Style
    Fillister countersunk
  • Head Diameter
    Between 0.2966 inches and 0.3016 inches
  • Head Height
    0.013 inches
  • Grip Diameter
    Between 0.1890 inches and 0.1895 inches
  • Shank Unthreaded Hole Diameter
    0.070 inches first hole and 0.075 inches first hole
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.178 inches and 0.198 inches
  • Thready Qty Per Inch (tpi)
    32
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    0.478 inches first hole
  • Material
    Nickel alloy 718
  • Material Specification
    Ams5662 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 5305015218876

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M557-3D3 Boeing Company, The
HT4027-3D3 Arconic Global Fasteners & Rings,
ST3M557-3D3 Fastener Innovation Technology, Inc.
HT4027-3D3 Sps Technologies, Llc
WC4027-3D3 West Coast Aerospace Inc
HT4027-3D3 Hi-shear Corporation
HT4027-3D3 Sps Technologies, Llc
HT4027-3D3 Lisi Aerospace Canada Corp
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