1. Geological factors
Second, economic factors:
Captive Panel Screws Material is Stainless Steel per ASTM-A581/A582.
Ideal for use on equipment and electronics where mounting hardware is subject to loss.Keystone`s captive screws are easily installed for secure equipment assembly.Round Head Screws: Knurled / Slotted- Knurled / Unslotted. Hex Head Screws: Slotted & Unslotted
Round Spacers used wildly in Electronic .
Captive Panel Screws
Captive Panel Screws,Captive Panel Fastener Screw,Stainless Steel Captive Panel Screws,Brass Captive Panel Screws
Shenzhen Long Wei Wang Precision Technology Co., Ltd. , https://www.electronichdwe.com