Brass C36000 Hex Head Captive Bolt Metric M8x25 Nickel Plating Valve Manufacturi

Product Specification

Brass C36000 Hex Head Captive Bolt Metric M8x25 Nickel Plating Valve Manufacturing

 
 
1,Description:

The Shoulder screw is used in conjunction with the bolt pull rod and is mainly used as a mold accessory to control the opening stroke between the fixed mold seat plate, the runner push plate and the fixed mold template in the three-plate mold. 
Because it can be set on the parting surface of the mold, the mold design can be miniaturized. This type of product features high hardness and toughness, as well as good wear resistance and heat resistance. It is suitable for precision molds and helps to extend their service life, especially playing a certain role in controlling the thermal deformation of precision molds. It is applicable to molds in high-temperature working environments.
When installing the plug and drive screws, it should be noted that the shaft diameter is a matching specification, which can facilitate the selection of plug and drive screws and bolt tie rods. For example, when using D20 stop bolts, it is recommended to use D20 bolt tie rods. When the plug screw is used for the thickness of the seat plate, the bolt head is designed to be embedded in the seat plate by 2mm. Therefore, the relationship between the depth W of the countersunk hole and the stroke S is W equal to S plus the thickness K of the plug screw shoulder plus 2, and L equal to the thickness of the seat plate minus the thickness K of the stop bolt shoulder plus 2. When using the thickness of the flow channel push plate, the thread length of the plug screw embedded in the bolt pull rod is set to 1.5 times the thread diameter.

2,Applications:
C36000 free-cutting brass hex head captive bolt in metric M8x25 specification is dedicated to fluid control valve body batch manufacturing, adopting bright nickel plating surface treatment to enhance surface smoothness, chemical stability and anti-scale adhesion performance for medium fluid pipeline working scenes. Adopting high-purity C36000 leaded brass raw material with national environmental certification, the material has excellent ductility, acid and alkali resistance, good thermal conductivity and non-rust metal property, will not produce rust impurity to pollute pipeline internal fluid, perfectly adapting to water treatment valve, chemical micro-control valve and heating pipeline valve internal assembly environment. Standard hexagonal head structure fits universal electric wrench and manual tool clamping, convenient for valve factory batch assembly and later pipeline on-site disassembly maintenance. Built-in captive limit step structure prevents bolt falling into valve fluid channel during assembly, avoids pipeline flow blockage caused by loose fasteners, improves overall operation stability of miniature control valves. Uniform bright nickel plating layer covers the whole bolt surface, reducing fluid surface adhesion, resisting weak acid, weak alkali pipeline medium corrosion, preventing brass surface oxidation tarnishing, and keeping long-term smooth appearance inside closed valve cavity. M8 fine-standard metric thread has high matching precision with valve zinc alloy and cast iron valve seat holes, moderate locking tightness, no thread galling during repeated debugging disassembly. This brass captive bolt has good sealing matching performance, cooperates with valve built-in sealing gaskets to optimize cavity tightness, applicable for household water control valves, industrial micro hydraulic valves, chemical corrosion-resistant regulating valves assembly production. It has low metal hardness damage to valve body base, no hole expansion damage after long-term use, stable limit effect, low failure rate, and is a pollution-free anti-corrosion limit fastener specially optimized for fluid valve manufacturing industry.

Available in small packing, carton packing, or pallet configurations to meet your shipping and storage requirements.

Manufacturer Information

Manufactured by JIA SHAN Hardware Company with strict quality control measures and pre-shipment inspection.