Torx Socket Cap Shoulder Screws Black Oxide Step Bolts Custom CNC Machined Fastener One-Stop Fastener Kitting Service

These Torx socket cap shoulder screws (step bolts) adopt precision CNC machining. The controlled shoulder section delivers fixed clearance, positioning and limiting during assembly. Black oxide surface treatment improves anti-rust performance while retaining surface lubricity. Torx drive provides stable torque transmission, preventing slipping during installation. Suitable for automation equipment, mold accessories, rotating assemblies, fixture jigs and mechanical limit structures. We support customized dimensions, material and surface treatment. Complete one-stop service: matching nuts/washers, private labels, instruction manuals, custom packaging and fastener kitting. Every piece undergoes strict dimensional inspection. Source all required fasteners in one order to simplify your supply chain.