Hex Bolt

A hex bolt is an externally threaded fastener with a six-sided head, supplied in partially or fully threaded forms. It is used to join metal, timber, or assembled components where a wrench-driven removable joint is required. The bolt is typically used with a nut or threaded hole, and tightening creates a clamping force that holds the parts together. Hex bolts are available in a range of sizes and materials, and the specific configuration must be selected based on the application requirements.

Buyers should specify the standard, thread diameter and pitch, nominal length, thread length, property class, material, and coating. The standards listed here (ISO 4014:2022 and ISO 4017:2022) govern particular forms and do not make sizes, materials, or finishes interchangeable. The RFQ should state the exact standard or drawing, required configuration, quantity, and inspection evidence.

For the product listed, the nominal size range is M1.6 to M64 within the scope of ISO 4014/4017. Materials on file include carbon or alloy steel and stainless steel. Strength or performance class should be selected according to ISO 898-1 or ISO 3506-1. Surface finishes may include plain, zinc-plated, hot-dip galvanized, or other specified coatings. These parameters are directory reference ranges and must be confirmed against the selected standard, drawing, and supplier evidence.

It is important to verify all model-specific values and standards with the legal manufacturer or supplier before procurement. The directory does not certify compliance or availability. Always confirm the exact specifications for your application.

Tightening the mating nut or threaded hole stretches the bolt and clamps the joined parts. The joint capacity depends on preload, thread engagement, bearing area, and service loading. Proper preload ensures that the joint remains secure under operating conditions, while insufficient preload can lead to loosening or failure. The bolt acts as a spring, storing energy that maintains clamping force. Overloading can cause yielding or fracture, so selection must consider the applied loads and environmental factors.