Hex Bolt Metric Class 10.9 UNC 10.9 Pitch 1.75

The Hex Bolt Metric Class 10.9 P 1.75 is a hex head bolt for wrench tightening, used in machinery, dies, equipment and metric assemblies with higher mechanical demand. TECTUL offers it in carbon steel, with metric thread and 10.9 specification associated with ISO 898-1. Correct selection depends on diameter, length, thread pitch, finish, compatible nut and actual service condition. It differs by material, thread system and specification from the other references in the family. In industrial purchasing, validate whether the drawing requires full or partial thread, whether the assembly works under vibration, whether there will be outdoor exposure and whether a material certificate or lot traceability is required.

Installation recommendations

• Confirm that the nut and washer match the same thread system, grade and finish as the bolt.
• Clean the threads before installation and avoid forcing thread start when there is misalignment.
• Apply the torque defined by the designer, the installation procedure or the project standard; do not use a generic value without validating lubrication and surface condition.
• In humid or outdoor environments, check whether the black finish requires additional protection or whether zinc-plated, galvanized or stainless steel is suitable.
• When the joint is structural or critical, do not substitute grade, standard or length without technical approval.

We dispatch to Bogotá, Medellín, Cali, Barranquilla and all of Colombia. Request a quote via WhatsApp for the Hex Bolt Metric Class 10.9 P 1.75, indicating size, quantity, required finish and whether you need nut, washer or certificate for technical purchasing.