Fastener Specifications Database

Comprehensive, objective specifications for screws, bolts, anchors, and nuts. No opinions, just facts.

Screws

Wood screws, machine screws, self-tapping, and specialty screws

Hex bolts, carriage bolts, eye bolts, and structural fasteners

Wall anchors, concrete anchors, toggle bolts, and expansion anchors

Hex nuts, lock nuts, wing nuts, and specialty nuts

Flat washers, lock washers, spring washers, and specialty washers

fasteners.fyi is an open-source database of fastener specifications. All data is sourced from manufacturer datasheets and industry standards.