12 gauge countersunk bronze screws

Silicon Bronze Wood Screws - Slot Head 12-Gauge

(5 reviews) Write a Review


High-quality 12-gauge silicon bronze wood screws in a variety of lengths.  These silicon bronze screws have a slotted countersunk (CSK) head and are ideal for use as boat building screws.

Even buried in the wooden structure of a boat, silicon bronze screws will not corrode - unlike stainless steel screws which will corrode when shielded from oxygen and unable to build a protective oxide layer.

We also recommend silicon bronze screws (or silicon bronze machine screws for high-load situations) for fastening our bronze deck hardware.

You are welcome to buy individual screws or benefit from the following quantity discounts if you buy more (your discount will be calculated automatically when you enter the quantity above).

View quantity discounts

SKU Overall Length Head Diameter
030253 1" (25mm) 10.3mm
030255 1-1/4" (32mm) 10.3mm
030254 1-1/2" (38mm) 10.3mm
030257  1-3/4" (44.5mm) 10.3mm
030260 2" (50mm) 10.3mm
030263 2-1/2" (63.5mm)   10.3mm
030266  3" (75mm) 10.3mm

5 Reviews

  • 5
    A good solid screw

    Posted by on 17th Mar 2021

    will order from them again

  • 5
    Silicon Bronze Fasteners

    Posted by Steve on 1st Jan 2018

    The silicon bronze wood screws, machine screws and nuts were just what the doctor ordered. After searching for these fasteners at four NZ chandlery stores and other fastener shops I located Classic Boat Supplies. Although postage is high for the trip from Australia to NZ the product quality and speed of delivery makes it money well spent. In hind sight I could have sourced all the fasteners from Classic Boat Supplies. The fasteners have been used on the refitting of an 11 foot clinker dinghy that was built in 1970.

  • 5
    Silicon Bronze Screws

    Posted by Glenn Creelman on 20th Oct 2014

    The Silicon bronze screws supplied were good quality, accurately manufactured and high strength (was able to drive the screws with the cordless drill without fear of breaking the screws or damaging heads). Price and delivery were excellent.

  • 5
    Silicon Bronze Screws

    Posted by Geoff on 18th Jun 2014

    Great quality, Packaging and quick Delivery highly recommended. Geoff

  • 5
    Silicon bronze slot head screws

    Posted by David Cranwell on 2nd Feb 2014

    After receiving very disappointing response from a similar company in NZ I went on line and found Classic Boat Supplies.
    Mike Watson has provided me with impeccable service answering every email promptly with good advice and most of all keeping me in the loop with delivery schedules.
    I cannot speak highly enough of the way in which Mike has treated me and I will be purchasing more goods for the 28ft Herreshoff Rozinante yawl that I am building in Hawkes Bay NZ.