Processing black blue gray nylon socket head cap screw cap dust cover 1/2-13 1/4-20

We have more than ten years of production experience in the screw industry, the main products are: cup head with intermediate combination bolt, single-head welding pad gasket, two ends of Xiaozi, self-locking screw cap, PC board plastic rivet, multi-tooth locking, outer diameter 8mm , Knock aluminum rivets, flat head machine screws, small round head bolts, blackened 8-grade flat washers, outer diameter 8mm, ultra-thin flat washers, 10.9-grade nuts, large hexagonal head bolts and other fasteners, due to the different materials and specifications of the products. There are different prices, please contact us if necessary.

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Product introduction

Screw Specifications

Screw head table

Guangdong Yueluo Hardware Industry Co., Ltd. is a kind of locking nut, which includes a nut, the bottom of which is circular, the middle is hexagonal, the top is circular, there is a bolt hole in the center, the side wall of the bolt hole is threaded, and the top of the nut is Set up several squash notches. According to the locking nut of the preferred embodiment of Guangdong Yueluo Hardware Industry Co., Ltd., the number of flattening notches is three. The three flattening gaps can be used as the focal point of the tightening tool and the clamping place of the anti-loose gasket bayonet, and the structure is simple and can be formed by die stamping at one time.

processing black blue grey

Further, it also includes a motor, the motor is provided with a thruster that makes the cutting wheel move towards the conveying device, the other end of the motor is provided with a bearing, the output end of the motor is provided with a special-shaped wheel, the special-shaped wheel is toothed with the bearing, and the motor drives the special-shaped wheel to rotate. , move the cut-off wheel closer to or away from the conveyor.

Nylon socket head cap screw

dust cover

Heat treatment broadcast quenching and tempering HB220-270, nitriding HRC>65 foreign use titanium carbide coating method to improve the corrosion resistance of the screw surface, but according to reports, its wear resistance is not good enough. A series of measures have been taken abroad to improve the wear resistance and corrosion resistance of the screw. One way is to use highly wear-resistant and corrosion-resistant alloy steel. Such as 34CrAlNi, 31CrMo12 and so on. There is also a method of spraying Xaloy alloy on the surface of the screw. This Xaloy alloy has high wear and corrosion resistance.


The pin body of the cylindrical pin is generally provided with one or two fixing holes for inserting the split pin to realize the positioning of the pin body. The fixing hole is drilled by a drilling machine, because the drill bit is easy to slip when drilling on the cylinder, and it needs to be processed by tooling. When machining the fixed holes on the cylindrical pins, because the cylindrical pins have many specifications and different thicknesses, even the positions of the holes required to be machined on the same cylindrical pin body are not the same, resulting in various drilling tooling for the pin body, resulting in processing costs. High, on-site management is difficult.


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