These uxcell left-hand thread hex bolts are exactly what you need for specialized applications where reverse threading is required! Measuring M10x40mm with a 1.5mm pitch, these bolts are made from quality 304 stainless steel that offers excellent corrosion resistance - perfect for wet environments or outdoor use where rust would be a problem with regular steel. The left-hand threading means they tighten counterclockwise instead of the usual clockwise, which is crucial for certain machinery, equipment, or safety applications where reverse rotation could loosen standard bolts. The hex head measures 17mm across with 6mm thickness, giving you good wrench purchase for proper tightening. With a tightening torque range of 45-59 N·m, these bolts can handle significant load requirements. They're manufactured to ISO4017/DIN933 standards, so you know the quality and dimensions are precise. These are perfect for assembly and maintenance projects involving households, machine tools, construction, ships, guardrails, home appliances, pipeline installations, equipment, and steel-framed houses. You'll need a wrench for installation, and they typically work with hex nuts and washers to form complete fastener assemblies. Having left-hand thread bolts on hand is one of those things you might not need often, but when you do need them, you're really glad you have the right hardware. The 304 stainless construction means they'll last through tough conditions without corroding or weakening over time.
Free 30-day returns 
Free 30-day returns
