Hardened Self Tapping Stainless Steel Screws , Pan Head Self Drilling Screw

Self tapping screws pan head ST8.0x30 ISO7049 DIN7981 type C -H zinc plate

This International Standard specifies the characteristics of Cross recessed pan head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

Surface hardness:

The minimum surface hardness after heat treatment
shall be 450 HV 0,3

Core hardness:

The core hardness af?er heat treatment shall be
270 HV 5 to 390 HV 5 for threads S ST3,9, and
270 HV 10 to 390 HV 10 for threads > ST4,2.

If you are looking for flange head screws, please contact us for further information.

    Shanghai summery industrial machine Co.,Ltd was established in 2006,it is located at Shanghai,which is the most vigorous city in world.

    As a one-stop-stop,we can manufacture,marketing,design,research and develop,we stand for reliable technology and the flexibility to cater to your needs.The staff in our proactive sales and service team is highly trained,we can get the most suitable supplier needs and delivering the customized to our business partner’s that make them successful.And also our quick response service that is unsurpassed in expertise and reliability.

    We have good sense of customer priority our experience and expertise allows our team to fully assess the technical and commercial viability of products.We place great on quality and reliability and it has earned us enormous respect and admiration within automobile,railtransit,new energy,electronics.mechanical,industrial robot and high-speed rail,etc.

    Understanding the market it evolves and the need to react positively to those of market,we believe Shanghai Summery Industrial Machine Co.,Ltd can provide you the most suitable product and service.