Service Hotlinekind of screw provided by Yueluo, the rod body of the screw rod has a thread segment, one end of the thread segment is provided with an annular convex ring on the outer peripheral surface of the rod body, and the distance between the convex ring at the front end of the screw threading direction and the rod core Smaller than the nominal size of the threaded section or the distance from the rear end of the bead to the rod core in the screwing direction is greater than the nominal size of the threaded section.
Specification Model Screw Specification Model Example: 4 X 10 PW AHC (+) ① ② ③ ④ ⑤ ⑥ ⑦ ① Screw Diameter ② Screw Length ③ Screw Head Type B: Spherical Cylindrical; C: Cylindrical; F (K): Countersunk ; H: Hexagon head; HW: Hexagon head with washer; O: Half countersunk head; P: Plain head; R: Half head; PW: Plain head with washer; T: Large flat head; V: Mushroom head;
Birminghamlead screw nut is provided with a through hole in the center for the screw rod to pass through, the surface of the through hole is provided with a screw thread engaged with the thread on the outer surface of the screw rod, and the surface of the through hole of the Birminghamlead screw nut is provided with a thread along the surface of the through hole. The oil storage groove in the axial direction, the depth of the oil storage groove is greater than the depth of the thread.
The performance grade is divided into 15 grades, stainless steel is grade 51, and the open type Birminghamblind rivet is divided into two types: countersunk head and flat round head according to the shape of the head. Among them, open Birminghamblind rivets with performance levels of 10 and 11 are widely used. In 2006, the National Standards Committee revised and released GB/T 12617.1-2006 Open Type Countersunk Head Blind Rivets Class 10 and 11 and GB/T 12618.1-2006 Open Type Flat Round Head Blind Rivets Class 10 and 11. National standards for 10 and 11 class open Birminghamblind rivets. The two new standards, respectively adopting ISO15978:2002 and ISO15977:2002 international standards, were released on July 5, 2006 and officially implemented on December 1, 2006. After implementation, it will replace the two old standards GB/T 12617-1990 Open Type Countersunk Head Blind Rivets and GB/T 12618-1990 Open Type Oblate Head Blind Rivets.
BirminghamCylindrical pins are widely used for positioning or connecting components on mechanical equipment, and the cylindrical pins are fixed in the pin holes by means of interference fit. BirminghamCylindrical pins are generally processed by a grinding machine and a punch former, but the above processing methods have complex operation procedures, high processing equipment and high processing costs.
We have many years of experience in the production and sales of screws, nuts, flat washers, etc. The main products are: copper injection molded copper knurled nuts, through-hole pressure riveting stud nuts, processing positioning pins, nylon anti-loose self-locking anti-skid and other products, We can provide you with the right fastener solution for you.
