{"product_id":"150pcs-m4x16mm-screws-hex-socket-cap-12-9-steel-black-zinc-full-thread-size-m4-16mm-150pcs","title":"150pcs M4x16mm Screws Hex Socket Cap 12.9 Steel Black Zinc Full Thread - size: M4*16mm 150pcs","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eElectroplating Process + Oil-Free Design: Adopts high-quality electroplating technology with a smooth, dense surface free of greasy residues. No hand or tool staining during handling and installation, ensuring a clean and efficient construction process.\u003c\/li\u003e\n\u003cli\u003e200+ Hours Salt Spray Test Certified: Complies with ISO 9227:2022 (Neutral Salt Spray\/NSS) standard, with corrosion resistance exceeding 200 hours. No red rust on the surface, and white rust ratio ≤ 3%, easily adapting to harsh environments such as outdoor humidity and coastal high salinity.\u003c\/li\u003e\n\u003cli\u003e12.9 Grade High-Strength Hardcore Quality: Meets 12.9 grade hardness standards, with tensile strength and shear resistance far superior to ordinary bolts. Capable of withstanding high-strength fastening requirements for heavy machinery and industrial supports.\u003c\/li\u003e\n\u003cli\u003eHigh-Precision Thread Engagement: Thread accuracy remains unaffected after electroplating, enabling smooth screwing without jamming. Features strong fastening force, no easy loosening or slipping, and is compatible with various nuts and connectors.\u003c\/li\u003e\n\u003cli\u003eStrict Quality Control Assurance: Each batch of products undergoes sampling inspection. Coating thickness, salt spray resistance, thread precision and hardness indicators all meet international standards, ensuring stable and reliable quality.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e Socket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Zinc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Style:\u003c\/strong\u003e Flat Point\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Brand: Duramedal","offers":[{"title":"Default Title","offer_id":67605232156892,"sku":"B0HJ85L4MG-size-m4-16mm-150pcs","price":14.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/0913\/3020\/files\/51kl-km2uAL.jpg?v=1790737759","url":"https:\/\/stemora.us\/products\/150pcs-m4x16mm-screws-hex-socket-cap-12-9-steel-black-zinc-full-thread-size-m4-16mm-150pcs","provider":"Stemora","version":"1.0","type":"link"}