Products
Explore our fastener catalog built for industrial reliability and project efficiency.
Hot Dip Galvanized Heavy Hex Bolts Supplier for Steel Structures
Hot dip galvanized heavy hex bolts for steel structures, bridge projects, tower construction, anchor assemblies, guardrails and outdoor industrial fastening. Custom standards, grades, nuts and washers available.
Hot Dip Galvanized Railway Fasteners
Railway fastening systems are vital safety components that secure rails to sleepers and connect rail segments, enduring strong vibrations while maintaining standard track gauge. Exposed to harsh outdoor conditions, fasteners face severe corrosion. Our hot dip galvanized (HDG) fasteners with a zinc coating over 40μm provide durable anti-rust performance and reduce maintenance work. Hotop supplies standard-compliant HDG rail fasteners including bolts, screws, and matched accessories per UIC, AREMA, DIN, and GB.
Custom Hot Dip Galvanized Round & Square U-Bolts
Sea transit poses two main risks to HDG fasteners: white rust from container rain and thread damage from vibration & impact. Proper packaging uses sealed PE bags, desiccants and dry pallets against moisture. Weight limits, heavy-duty cartons and firm securing prevent thread damage. Standardized packing fully protects goods during shipping.
Stainless Steel Hex Bolts (SS304 / SS316) | A4-80 Heavy Duty Hexagon Head Fasteners
Stainless steel hex head bolts in SS304 and SS316 comply with DIN933/DIN931 standards. Passivated surface avoids thread seizing, with complete custom sizes. Excellent corrosion resistance fits coastal, chemical and marine projects. Factory in Handan offers strict testing, customized packing and stable shipping to Southeast Asia, with MTC certification provided.
DIN 6923 Stainless Steel Serrated Hex Flange Nuts | SS304 & SS316 Anti-Slip Lock Nuts
Stainless steel serrated flange nuts DIN6923 adopt integrated flange and anti-slip serrations to resist loosening under vibration. SS304/316 options offer excellent coastal anti-corrosion performance. Precision 6H threads, burr-free passivated finish. In-stock standard sizes with fast delivery, factory in Handan with full QC test and customizable packaging for Southeast Asia projects.
SS304 / SS316 Hex Head Bolts
Stainless steel hex head bolts comply with DIN933 full thread & DIN931 half thread standards, available in SS304 A2-70 and marine SS316 A4-80. Passivated finish avoids thread galling, 6g precise metric threads. Factory in Handan holds abundant standard stock with fast delivery, full quality inspection and MTC certificates, widely used for coastal solar, chemical and municipal projects in Southeast Asia.
Overtapped HDG Square Nuts for Utility and Industrial Applications
HDG overtapped square nuts comply with DIN555 and ASTM A563. Hot dip galvanized for long outdoor anti-rust performance, internal threads are oversized tapped to fit HDG bolts smoothly without jamming. Square shape locks in metal channels to prevent spinning. Widely used for utility poles, farm machinery and timber construction, packed moisture-proof for sea shipment.
Made-to-Print Custom HDG Fasteners & Structural Hardware
Custom made-to-print HDG fasteners are tailor-produced per customer drawings. Engineers reserve dimensional allowance before hot dip galvanizing to avoid thread jamming and tolerance deviation. We prevent hydrogen embrittlement and offer full in-house forging, CNC machining & FAI inspection. Covering anchor bolts, U-bolts, clevis pins etc., with moisture-proof customized export packaging for infrastructure and heavy machinery.
Heavy-Duty HDG Fasteners for Agricultural Machinery and Farm Infrastructure
HDG agricultural fasteners feature thick zinc alloy coating resistant to fertilizer, manure abrasion and outdoor moisture. Matching nuts are overtapped for smooth assembly. Includes carriage bolts, square nuts, U-bolts and high-strength hex bolts, widely used in greenhouses, livestock pens, irrigation and farm machinery OEMs. Factory strict QC and moisture-proof export packaging, also supports custom drawing production.