Short answer: Screw selection follows the material: machine screws for tapped metal, self-tapping and self-drilling for sheet, wood screws for timber and set screws for axial fixing; supply fasteners in our Bolts and Nuts Supplier and the corrosion note in our Stainless Fastener Guide.
At a Glance
Screw vs Bolt
Screws form or enter a threaded hole while bolts clamp with a nut, with the bolt view in our Bolt Buyers Guide.
Metal Screws
Machine screws thread into tapped holes and self-tapping or self-drilling screws cut their own thread in sheet, with base metal in our Carbon Steel Supplier.
Wood and Set Screws
Wood screws grip timber and set screws lock collars and pulleys on shafts, with the grade detail in our Fastener Grade Guide.
Coating and Quality
Zinc and stainless finishes fight corrosion; verify lots with our Quality Inspection Guide and documents per our Mill Test Certificate Guide.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Frequently Asked Questions
Self-drilling needs no pilot hole.
Self-tapping or self-drilling point.
Square or Pozi resists cam-out.
Yes – A4 (316) for marine.
Yes – MTC on request.
Get a Screw Quote
HXSCO supplies machine, self-tapping, wood and set screws in carbon and stainless with MTC. Send type, size and quantity for a quote.