三住有螺絲鎖緊力的選用計算你參考看看
https://www.google.com.tw/url?sa=t&source=web&rct=j&url=
https://tw.misumi-ec.com/pdf/fa/p2849.pdf&ved=0ahUKEwjat7q7o9_OAhWDq5QKHbxHCAAQFggZMAA&usg=AFQjCNHk1sMUTbinU3YiLT4ecAgFHg5m3Q&sig2=jsTCVVbUPEZP0PQD2RgafQ連結貼的很奇怪,真拍謝
http://tw.misumi-ec.com/pdf/fa/p2849.pdf