Profile: Excalibur Screwbolts Ltd provides products for construction industry. We specialize in offering screwbolts such as hexagon head, security countersunk, secuirty dome head, eyebolt, hookbolt, studbolt, scaffolding ringbolt and countersunk. The triple thread design has been in house tested and supports up to 2.5kN of tensile loading in the weakest of building blocks and also allows a positive hammer fix in end grain timber. The triple thread design also has a high resistance to reaming out.