The machines are used to roll threads on screw blanks with various different heads, using two screw-rolling dies. The thread accuracy reaches Grade B. the machines are suitable for volume production of fastener parts.type Nothread rollingproductivety (pc/min)motor powermachine weight(kg)outer form sizeZ25-4M2-M4801.1kw3001100×700×1000Z25-6M4-M6701.5kw4001300×800×1100Z25-8M6-M8603kw6001500×1100×1400Z25-10M6-M10554kw8001600×1100×1450Z25-12M6-M12505.5kw9002000×1200×1500Z25-16M8-M16457.5kw15002500×1000×1500Z25-20M14-M203511kw35003000×1300×1800Z25-24M14-M273515kw50003500×1400×1800