Custom Industrial Fasteners & Bolts | Precision Manufacturing

Mechpart manufactures standard and custom-engineered fasteners that meet the exact specifications of your assembly line, construction project, or heavy-equipment overhaul. Our portfolio spans metric (M3–M64) and imperial (UNC/UNF) threads in strength grades from 8.8 through 12.9 for carbon/alloy steel and A2/A4 for stainless steel, with optional coatings including zinc plating, hot-dip galvanizing, Dacromet, and Xylan. Every batch is traceable to its heat lot with full mechanical-property test reports (tensile, yield, elongation, hardness) available on request.

Our fasteners are deployed in structural steel frameworks, automotive powertrain assemblies, wind-turbine flange connections, railway infrastructure, and marine deck hardware—environments where a failed bolt means downtime measured in thousands of dollars per hour. We supply OEMs requiring just-in-time delivery schedules as well as MRO buyers who need mixed kits of unusual thread pitches, captive washers, or tamper-proof drive geometries shipped within a week.

What sets Mechpart apart from catalog distributors? We don't just pick parts from a warehouse—we engineer solutions. Need a custom shoulder bolt with an under-head radius to eliminate a stress riser? A titanium hex-cap screw for a weight-sensitive aerospace fixture? A nylon-patch locking fastener that survives 500 thermal cycles? Our in-house tooling department turns drawings into finished parts faster than most competitors can process a purchase order. Standard fasteners ship in 1–3 weeks; custom designs in 3–5. Minimum order quantities start at 1,000 pieces for stock items and scale down for specials—talk to our team.