Hex Head Bolts with Full Thread

Hex head bolts with full thread deliver exceptional clamping force across a wide range of industrial and construction applications. Our Fully Threaded Hexagon Bolts feature threading that extends from the tip all the way to the underside of the hex head, ensuring maximum grip length and versatility when securing components of varying thicknesses. Professional engineers and procurement specialists consistently choose these fasteners for structural steel connections, machinery assembly, and heavy equipment maintenance. The Hexagon Bolts Threaded to Head provide uniform stress distribution along the entire bolt shaft, eliminating weak points that could compromise joint integrity under dynamic loads.

Hex Head Bolts with Full Thread are manufactured to meet rigorous international standards including DIN 933, ISO 4017, and ASME B18.2.1, ensuring consistent dimensional accuracy and reliable mechanical properties. Each batch undergoes thorough quality control testing for thread pitch conformity, tensile strength verification, and surface finish inspection before shipping. The full-length threading allows installers to use these bolts in applications where grip length cannot be precisely predetermined, making them an ideal choice for field assembly projects and retrofit installations. Corrosion resistance options include zinc plating, hot-dip galvanizing, and stainless steel grades to match diverse environmental conditions across indoor and outdoor environments.

Material grades and mechanical specifications are listed below for quick reference during product selection.

• Diameter range: M6 to M36 (1/4" to 1-1/2")


• Thread type: Coarse UNC and fine UNF options in imperial, standard metric pitch options


• Length range: 10mm to 300mm available from stock, custom lengths upon request


• Drive size: Hex head dimensions conform to ISO 272 and ASME standards


• Head marking: Grade identification stamped clearly on head surface per SAE or property class system


• Certification: Mill test reports and 3.1 material certificates included with all orders


• Surface treatments: Black oxide, phosphate, zinc flake coating, PTFE coating for specialty uses

Detailed product parameters are organized in the table below for straightforward comparison across sizes and grades.

Additional thread specifications cover the entire engagement zone with precise pitch diameter tolerances maintained throughout production. Heat treatment processes for high-strength grades follow controlled quenching and tempering procedures to achieve the specified mechanical properties without brittleness. The hexagon head geometry provides sufficient bearing surface area for both flat washers and lock washers, preventing embedment into softer mating materials. All dimensions remain within the tolerance limits defined by the applicable manufacturing standard, guaranteeing interchangeability between batches and suppliers.