Non-standard Customized Products

The non-standard customized products series is dedicated to providing personalized fastening solutions tailored to customer requirements in dimensions, materials, thread specifications, surface finishes, and functional structures. Based on customer-provided drawings, samples, or technical specifications, we perform precision machining to manufacture products including special-shaped screws, special bolts, non-standard nuts, shaft components, sleeves, brackets, and other machined parts. A wide range of materials is available including carbon steel, alloy steel, stainless steel, brass, and aluminum, supported by various forming processes such as turning, milling, stamping, cold heading, and hot forging. Minimum order quantities are flexible with controllable lead times. Widely used in automation equipment, electronic instruments, medical devices, mold fixtures, aerospace, and defense-related applications.

Stainless Steel Positioning Sleeve

Stainless Steel Positioning Sleeve is a cylindrical precision fastener made of high-quality 304 stainless steel (containing 18% chromium and 8% nickel) with internal threads. Its core function is to precisely position and fix parts such as shafts, pins, and rods. By tightly mating with bolts via internal threads, it ensures parts maintain their correct position during assembly, effectively preventing loosening or displacement caused by vibration, impact, or repeated disassembly.

Blue-White Zinc Screw

Blue-White Zinc Screw (alias: Blue-White Zinc Set Screw, Color Zinc Machine Screw) is a fastener made of carbon steel (base material) with blue-white zinc (color zinc) electroplating on the surface. It is mainly used for part fixation and anti-loosening in machinery, furniture, building materials, and other fields. Its surface presents a uniform blue-white color, combining decorativeness and practicality: Anti-Corrosion: The blue-white zinc layer effectively isolates air, moisture, and mild corrosive media (e.g., water vapor in humid environments, weak acids/alkalis), preventing the carbon steel base from rusting. Suitable for humid or mildly corrosive environments; High Strength: The carbon steel material (common grades: 4.8, 8.8) maintains good mechanical properties (e.g., Grade 8.8 has a tensile strength ≥800MPa), suitable for occasions requiring a certain load-bearing capacity; Structural Design: Mostly adopts a hexagon socket drive design (compliant with ISO 4762 standard), convenient for tightening with wrenches, electric screwdrivers, and other tools; the thread is a metric standard (e.g., M8×1.25), with a regular tooth profile and small fit clearance (IT6 grade precision), ensuring reliable fixation.

Stainless Steel 304 Through Hole Round Nut

Stainless Steel 304 Through Hole Round Nut is a high-precision cylindrical fastener designed for fixing shaft parts. Its core structure includes: Through-hole design: A punch hole (diameter slightly larger than the shaft) allows shafts, pins, or bolts to pass through, eliminating the need for additional sleeves or washers, saving installation space; Hexagon socket drive: Compliant with ISO 4762 international standards, it is compatible with wrenches, electric screwdrivers, and other tools, ensuring convenient installation and high torque transmission; 304 stainless steel material: Containing 18% chromium and 8% nickel, it forms a dense passivation film, providing excellent corrosion resistance and oxidation resistance (capable of withstanding moisture, weak acids/alkalis, and salt spray), suitable for harsh environments such as food processing, medical equipment, and outdoor facilities. This product is primarily used to fix shafts, bearings, couplings, and small parts, preventing rotation or displacement. It is a core fastener in industries such as machine tools, precision machinery, and automobiles.