#4-40 Star Drive 6-Lobe Flat Head Machine Screw 18-8 Stainless Steel

#4-40 Stainless Steel Star Drive Flat Head Machine Screws

Diameter - Thread Pitch: #4-40


#4-40 Stainless steel star drive flat head machine screws in 18-8 stainless steel.

  • Countersunk flat head with a star drive (6 lobe) drive
  • Used with nuts or in a pre-drilled hole
  • Designed to prevent stripping during proper installation
  • Higher torque can be used with this drive style
  • 18-8 stainless steel is the fastener industry standard
  • Suitable for freshwater environments

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Product Specifications
Body Diameter
#4 (Max 0.1120 - Min 0.1112)
Color
Silver
Corrosion Resistant
Yes
Countersink
82 Degree
Drive Style
Star
Grade
18-8
Head Diameter
Max 0.225 - Min 0.195
Head Style
Flat
Material
Stainless Steel
Overall Head Height
Max 0.067 - Min 0.055
Product Type
Torx 6 Lobe Flat Head Machine Screw
System of Measurement (Unit)
Inch
Thread Direction
Right Hand
Thread Pitch (Count)
40 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Torx Drive
T-10, T-9
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Size
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