Ultra-Low Head Screws ” 310Slim ” Selling as a Saima original product since 2001!!

To use space saving bolt and screws, customer ask hardness sometimes.
Base on standard products like DIN912 socket cap screw and

DIN7984 low head cap screw satisfied hardness demand.

In the case of extra low head cap screw, head hardness

and thread hardness are often different. (ex. Head 5.8 / thread 8.8)

To make clear in your mind, we show you head height order below.
Head Height

310Slim<Ex Low Head <DIN7984<DIN912 Hex Socket Cap