Stainless Steel Weld Metal Screw UNC 1/4-20 Passivated Anti Corrosion Fittings

Product Specification

Stainless Steel Weld Metal Screw UNC 1/4-20 Passivated Anti Corrosion Fittings For Rail Transit Signal Equipment Photovoltaic Power Station Frame Assembly

 
 
1,Description:

Stainless steel weld screw uncoated represents the ideal fastening solution for food processing equipment where hygiene and corrosion resistance are paramount. Fabricated from AISI 304 or 316 stainless steel, this weld screw offers exceptional resistance to chemical cleaning agents, steam sterilization, and acidic food products. The 1/4-20 UNC thread configuration provides standard compatibility with North American equipment standards. Unlike coated fasteners, the uncoated bare stainless surface eliminates any risk of coating contamination migrating into food products. The welding tip geometry is optimized for capacitor discharge stud welding achieving rapid attachment without burn-through on thin stainless steel panels common in food machinery. These screws permanently attach handles, brackets, sensors, and inspection covers to processing tanks, conveyors, and packaging machines. The smooth stainless surface facilitates thorough cleaning and meets FDA and USDA sanitary equipment requirements. Passivation treatment enhances the natural chromium oxide layer for maximum pitting resistance. Weld screws eliminate through-holes preventing bacterial harborage points and simplifying equipment sanitation protocols essential for food safety compliance.

2,Applications:
This UNC 1/4-20 stainless steel weld screw is customized for outdoor and high-stability industrial scenarios including rail transit signal equipment and photovoltaic power station frame assembly, adopting premium stainless steel raw materials with excellent natural oxidation resistance and structural stability. The American standard UNC coarse thread design strictly follows international thread specifications, with precise tooth spacing and smooth thread surfaces to ensure reliable locking and fastening effects for large outdoor equipment frames. The professional passivation surface treatment removes surface metal impurities and forms an inert protective film on the screw surface, effectively avoiding rust, oxidation and electrochemical corrosion caused by long-term exposure to outdoor wind, rain and ultraviolet radiation. Different from conventional coating treatment, passivation processing will not affect the original mechanical properties and surface precision of stainless steel, retaining the product’s high toughness and structural stability for long-term outdoor operation. The weld screw features high welding firmness and zero deformation after welding, adapting to the frequent temperature changes and environmental humidity changes of photovoltaic power stations and rail transit outdoor facilities. It can resist natural erosion and mechanical loosening caused by long-distance equipment operation, ensuring the long-term stable connection of signal equipment and photovoltaic support frames. With strict quality inspection on dimensional accuracy and welding performance, this product fully meets the high-standard anti-corrosion and anti-loosening requirements of outdoor new energy and rail transit industries.

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.