Useful information
The engineering reference desk
Resources that speed up work with specifications and drawings — standards, materials, calculators and answers to common questions.
01 · Standards
Standards & sizes
GOST ↔ DIN ↔ ISO, eleven standard systems, size ranges and materials.
02 · Materials
Materials & grades
Fifteen material groups and a reference of common grades — from St3 to titanium.
03 · Calculation
Engineering calculators
Threads, torque, hardness, fastener and metal weight, coating consumption.
04 · Catalogues
Product catalogues
PDF catalogues of fasteners and the network's production capabilities.
05 · Blog
Engineering articles
Fasteners, coatings, reverse engineering, production in China.
06 · FAQ
Questions & answers
Frequent questions on orders, production, lead times and documents.