Our factory specializes in the production of a full range of fasteners, with a standard delivery time of 20–25 days and expedited delivery available in 7–15 days. Located just 35 kilometers from Ningbo Port, we offer highly convenient export logistics. In-stock items can be delivered to the warehouse on the same day.

Manufactured in strict compliance with DIN 653 specifications, these knurled head screws guarantee dimensional accuracy and interchangeability. Available in high-strength carbon steel (with zinc plating or black oxide finish) or corrosion-resistant stainless steel (A2/AISI 304 or A4/AISI 316), they withstand demanding environments, vibration, and repeated handling. The large knurled head is ergonomically designed for comfortable, slip-resistant operation, even when wearing gloves.

Our precision-manufactured DIN653 large flat knurled head screws provide the ideal solution for applications requiring frequent adjustment, tool-free assembly, or reliable access in confined spaces. Featuring a wide, flat head with deep, diamond-pattern knurling, these screws deliver exceptional finger grip and torque transmission — eliminating the need for tools and speeding up assembly and maintenance processes.

• Tool-free, hand-tightening design for fast assembly and adjustment
• Deep diamond-pattern knurling for superior grip and torque transmission
• DIN 653 compliant dimensions for accurate fit and interchangeability
• Available in carbon steel (zinc plated / black oxide) and stainless steel A2/A4
• Ideal for confined spaces and applications requiring frequent servicing

We offer comprehensive OEM and ODM services to meet your specific requirements:

• Custom head styles, drive types (Phillips H / Pozidriv Z), and thread designs
• Special lengths, diameters, and tolerances
• Specific material grades and surface finishes
• Custom packaging with your branding (labels, boxes, bags, blister packs)
• Logo engraving on screw heads

• Professional fastener manufacturer with over 10 years of export experience
• Advanced automatic cold heading and thread rolling equipment ensuring consistent quality and fast delivery
• Strict quality control system from raw material sourcing to finished product
• Competitive factory-direct pricing with no middlemen
• Responsive customer service and technical support
• Flexible MOQ to accommodate both trial orders and bulk shipments

Screws are packed in neutral packaging boxes with standard quantities arranged in small cartons. Custom packaging configurations are available upon request. Small cartons are consolidated into larger master cartons for secure transportation. Palletized units are wrapped with waterproof film and reinforced with packaging straps, with custom shipping marks available.