پیچ و مهره چیست؟

انواع پیچ و مهره چشم

جعلی: اینها پیچ و مهره چشمs به جای تشکیل به صورت یک تکه جعل می شوند و چشم و شانه ای پیوسته دارند. این طراحی آنها را قادر می سازد تا برای بارهای سنگین تر استفاده شوند.
Plain or Regular: These پیچ و مهره چشمs are used for vertical loading only and are not recommended for angular lifting. They can also be used with tie-downs to secure loads and as wire guides.Collared: Collared or shouldered پیچ و مهره چشمs are fully threaded and reinforced with a collar or shoulder. When installed the shoulder sits flush with the mounting surface and offers more stability to the base of the eye and prevents bending and deforming. This design means that these پیچ و مهره چشمs can be used for angular loads of up to 45°. 

Commercial or Load Rated: These پیچ و مهره چشمs are designed for use in lightweight non-load bearing applications such as securing ropes or cables to posts and are not used to lift or suspend an object. Load rated پیچ و مهره چشمs often have embossed stamping on the body of the eyebolt stating the working load limit (WLL), batch number and thread size.Machinery: Machinery پیچ و مهره چشمs are forged and shouldered and have threads with a high holding strength. These پیچ و مهره چشمs have a heavy-duty design and are made to high specifications and standards. Applications include connection points in rigging applications and, due to their shouldered design, can be used to angled loads.Swivel: Swivel پیچ و مهره چشمs can rotate 360°. The eye of the bolt can also move around which improves flexibility in the attachment. Swivel پیچ و مهره چشمs are used in heavy applications and are designed to lift from various angles.یک eyebolt can also be galvanised, anodised or plated to prevent corrosion. The most common material is stainless steel as it is corrosion resistant and makes the eyebolt suitable for use in outdoors or offshore applications such as marine applications and in the oil, gas or wind energy sectors.