#4-40 Stainless Steel Security Star Drive with Pin Button Head Machine Screws
Diameter - Thread Pitch: #4-40
#4-40 Star Drive security button head machine screws
- Torx styled Star (with pin) drive add security to machine screws by using an uncommon drive
- Less likely to strip than Phillips when installed correctly
- Primarily for metal to metal applications
- 18-8 Stainless steel is the fastener industry standard adding rust and corrosion resistance to an assembly
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Product Specifications
Body Diameter
#4 (Max 0.1112 - Min 0.1061)
Color
Silver
Corrosion Resistant
Yes
Diameter
#4
Drive Style
Star With Pin
Grade
18-8
Head Diameter
Max 0.208 - Min 0.200
Head Height Max
0.06
Head Style
Button
Material
Stainless Steel
Overall Head Height
Max 0.060 - Min 0.055
Product Type
Tamper Proof Machine Screws
Security Fastener
Yes
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 TP Drive
T-8
