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NSN 5305-00-450-5973

High Torque Screw

About this product

Bearing surface of head to be grooved to 0.323 in. Min 0.325 in. Max dia 0.050 in. Min 0.055 in. Max from top of head.

Manufacturer part number C387V4-14 for national stock number 5305004505973.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-450-5973.

  • MPN or Model

    C387V4-14

  • 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 0.352 inches and 0.402 inches
  • Fastener Length
    Between 1.237 inches and 1.267 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.412 inches and 0.439 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.865 inches and 0.885 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    60.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Titanium alloy uns r54520
  • Material Specification
    Nas 621, 6al-4v assn standard single 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 5305004505973

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
C387V4-14 Textron Fastening Systems
C387V4-14 Sps Technologies, Llc
C387V4-14 Arconic Global Fasteners & Rings,
C387V4-14 Sps Technologies, Llc
C387V4-14 Alcoa Global Fasteners, Inc.
AIC1023V4-14 Sps Technologies, Llc
VT1039V4-14 Alcoa Global Fasteners, Inc.
CS318642V4-14 Textron Fastening Systems
C387V4-14 Hi-shear Corporation
C387V4-14 Lisi Aerospace Canada Corp
C387V4-14 Lockheed Martin Corporation
HR101V-4-14 Hi-shear Corporation
Stock Check
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