Specifications – ASTM International provides standards for all aspects of the manufacturing process.

Nut Compatibility Chart  – Finding the correct nut to match your particular part can be a confusing process.

Fastener Identification Chart – Have a Fastener in your hand and wondering what the lines mean?

Washer Information Chart – Use this page to help figure washer weights.

Nut Weight Chart – Looking for the weight of a particular nut?