What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
The national standard name of the cross recessed small pan head three-combination screw is the cross recessed small pan head screw, the spring washer and the flat washer assembly. The national label is GB/T9074.8-1988. This 1988 refers to the year, that is, this standard is the standard issued by the country in 1988. The specifications of the cross recessed small pan head three-combination screw, our company's minimum is M2.5, the shortest is 5mm, the largest is M10, and the longest is 90mm. Of course, as customers have higher and higher requirements for small pan head combination screws, or require smaller and longer combination screws. If the quantity is large, or with the development of our company. Buy some advanced combination screw machines. Come and go to meet the higher requirements of our customers.
Stainless steel screw wire is also called stainless steel cold pier wire, which is mainly used for various fasteners, such as mechanical parts, electronic application parts, etc. Corresponding anti-corrosion properties and mechanical properties can be obtained according to different materials. In order to obtain a better formability during cold forging, choose high quality. The appropriate material of the wire is particularly important.
pin fixing device, comprising fastening bolts for processing and fixing two workpieces, wherein the pin fixing device further comprises a fixing groove arranged on the workpiece, a positioning hole which is arranged on the workpiece and communicated with the fixing groove, and a positioning hole is arranged in the positioning hole A pin is provided with a pin bushing, the pin bushing is sleeved on the positioning pin, an accommodation space is provided between the pin bushing and the inner wall of the fixing groove, and colloid is filled in the accommodation space. The use of the pin fixing device of Guangdong Yueluo Hardware Industry Co., Ltd. can greatly improve the positioning accuracy of the pin, improve the processing efficiency, reduce the manufacturing cost, testing cost and labor cost, with strong mobility and quick response.
GBT 3098.19-2004 blind rivets in my country are divided into: GB/T12615 closed oblate head blind rivets; GB/T12616 closed countersunk head blind rivets; GB/T 12617 open type countersunk head blind rivets; T 12618 Open-type oblate head blind rivets; the international standard is DIN7337; there are 1990 versions and 2004. The 2006 version is mainly the 2006 version.
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