Specifications and standards:

  1. screw diameter : the diameter of the screws are threaded only the thickness of the part , in production and in national standards , weight is lower tolerance , 如 11.7MM 11.8MM      11.75MM 11.5MM 都属于 12MM 的螺丝 ,9.7MM 9.75MM 9.68MM 等等都属于 10MM 螺丝 . 以此类推 .

2. 螺丝的长度 : 一般平头 , 沉头螺丝是按照总螺丝长度来计算 , 其他六角头 , 圆头 , 内六角等长度是不连头部 , 也就是按照螺杆的长度来计算 .

3. 螺丝的规格 : 店铺中很多都是多少乘以多少 , 如 M10*25 也是 10MM 粗 ,25MM 长的螺丝 .

4. the size of the spacer washers : how much weight screw for use in whichever

Shipping instructions:

1. before buyers take product, please contact the owner if it is available, so as not to cause inconvenience of stock out of stock. Normally in stock same day shipping, if out of stock. We will promptly notify the seller.

About invoicing

Need to be invoiced, please contact the owner (less than 100 Yuan, in principle not invoiced, invoice needs plus 10 Yuan, driving ordinary invoice)

About after sale appraisal of

After receipt of the goods. If you are satisfied with goods. Trouble favorably support. Very grateful! If there is an objection, please promptly contact the owner, we will properly deal with aftermarket not directly given the difference in assessment.