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NSN 5305-01-268-0145

High Torque Screw

About this product

1thd hole in top of head 0.138-32 unjc-3b; threaded hole 0.300 in. Min 0.345 in. Max dp; counterbore 0.145 in. Min lg,0.150 in. Max lg; 0.060 in. Wide in. Wide in unthreaded shank; distant from top of head to beginning of injection port 0.300.

Manufacturer part number HT4075V4-12-30 for national stock number 5305012680145.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-268-0145.

  • MPN or Model

    HT4075V4-12-30

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    136500 - Metal NOI/metal Alloys NOI
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.444 inches and 0.494 inches
  • Fastener Length
    Between 1.204 inches and 1.234 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 0.740 inches and 0.760 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams 4928 assn standard 1st material response and ams 4967 assn standard 2nd material response
  • Thread Series Designator
    Unjf
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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 5305012680145

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4075V4-12-30 Arconic Global Fasteners & Rings,
HT4075V4-14-30 Alcoa Global Fasteners, Inc.
HT4075V4-12-30 Hi-shear Corporation
HT4075V4-12-30 Lisi Aerospace Canada Corp
3M1034V4-12-30 Boeing Company, The
11839V4-12-30 Reid Products Inc.
3M1034V4-12-30 Alcoa Global Fasteners, Inc.
HT4075V4-12-30 Sps Technologies, Llc
HT4075V4-12-30 Alcoa Global Fasteners, Inc.
Stock Check
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