Which screw gauge # do I need?

Check the Dimensions of our Bronze Wood Screws

 

Screw Gauge Head Diameter (imperial) Head Diameter (metric) Shank Diameter (imperial) Shank Diameter (metric)
#4 0.199" (~13/64") 5.02mm 0.112" (~7/64") 2.84mm
#6 0.252" (~1/4") 6.40mm 0.138" (~9/64") 3.50mm
#8 0.332" (~21/64") 8.43mm 0.164" (~5/32") 4.17mm
#10 0.385" (~25/64") 9.78mm 0.190" (~3/16") 4.83mm
#12 0.438" (~7/16") 11.13mm 0.216" (~7/32") 5.49mm
#14 0.491" (~1/2") 12.47mm 0.242" (~1/4") 6.15mm
#16 0.544" (~35/64") 13.82mm 0.268" (~17/64") 6.81mm
#18 0.597" (~19/32") 15.16mm 0.294" (~19/64") 7.47mm
#20 0.600" (~39/64") 15.21mm 0.312" (~5/16") 7.92mm
#24 0.722" (~23/32") 18.36mm 0.359" (~23/64") 9.12mm
A pile of oval head, countersunk, slotted drive bronze wood screws

Whether you are building an entire boat or a small DIY project, you can rest assured that your bronze wood screws from Fair Wind Fasteners are of the highest quality and are made out of a tried and true corrosion resistant 651 Silicon Bronze alloy that will last for decades to come.

  • Available in a variety of head and drive types: As one of the largest purveyors of silicon bronze wood screws in the world our selection is unmatched. We have them with countersunk (CSK) flat and oval heads, round heads, slotted drive, frearson (R&P) drive, and square drive.
  • Full Body: Our bronze wood screws have a shank diameter that is the same size as the outside of the threads. That means your clearance hole will be completely filled, creating a waterproof seal. Full bodied screws are made from a larger wire stock than screws that aren't full bodied, meaning they are stronger when they hold and stronger when you are driving them in.
  • Cut Threads: The threads are cut, not rolled. Rolled threads have a reduced shank size compromising the fastener's strength and water-tightness once seated. Most other companies produce rolled thread screws and you'll find they twist and break when driving them in.
  • Cold Pressed Heads: The heads on these bronze screws are cold formed, which hardens them through a process called "work hardening". Experience less stripped screw heads with our cold pressed heads.
  • 651 Silicon Bronze Alloy: Mystery bronzes step aside. C65100 Silicon Bronze is the ideal alloy for wood screws in your traditional boat building, fine furniture, or DIY project.