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NSN 5305-00-040-9431

High Torque Screw

About this product

Between 1.819 inches and 1.866 inches fastener length, flat countersunk head style, between 0.497 inches and 0.507 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number BM19019-4-23 for national stock number 5305000409431.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-040-9431.

  • MPN or Model

    BM19019-4-23

  • 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
    Between 0.371 inches and 0.438 inches
  • Fastener Length
    Between 1.819 inches and 1.866 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.428 inches and 1.448 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Stainless steel
  • Thread Series Designator
    Unjf
  • Specification Data
    08524-b-19019 manufacturers 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 5305000409431

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BM19019-4-23 Huck International, Inc.
HT8140-4-23 Arconic Global Fasteners & Rings,
106830-4-23 Sps Technologies, Llc
HT295-4-23 Alcoa Fastening Systems
HT8140-4-23 Alcoa Fastening Systems
11905-4-23 Reid Products Inc.
ST3M454-4-23 Boeing Company, The
106830-4-23 Sps Technologies Inc
BM19019-4-23 Huck Intl Inc
HT295-4-23 Hi-shear Corporation
HT8140-4-23 Alcoa Global Fasteners, Inc.
Stock Check
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