CM Internal Hexagonal Flat Head Machine Screw

This stainless steel CM internal hexagonal flat-head machine screw (commonly known as CM flat cup screw / large flat-head machine thread) is cold-drawn from high-quality stainless steel, and its surface presents a silver-white metallic color. Its distinctive design is the "large diameter + thin head" flat round head (flat head), combined with the central internal hexagonal drive groove and full-thread machine screw (specifications range from M2 to M8, length excluding the head). The product has passed quality system certifications such as ISO9001 and TS16949, and combines the excellent rust prevention ability of stainless steel with the high torque characteristic of internal hexagons. It is an ideal fastener for precise assembly that balances flatness, strength and aesthetics.

Product Feature

Flat-top thin-profile design: The head diameter is large and the thickness is extremely thin (for example, the M4 head is only 1.3mm thick and the head diameter is 8.1mm). After installation, it can be flush with or slightly raised above the workpiece surface, without interfering with the space, and the appearance is neat. The large supporting surface can disperse pressure and prevent indentation on thin plates/soft materials.

Hexagon drive with high torque: The hexagon hole design is convenient for using a wrench to apply stable torque. Compared to the cross slot, it is less prone to slip and has excellent anti-loosening performance in a vibrating environment, suitable for frequent disassembly.

Stainless steel rust-proof and corrosion-resistant: The material has excellent oxidation resistance and corrosion resistance, suitable for humid, outdoor and mild acid-base environments (316 material can withstand salt spray). The original color surface does not require electroplating, environmentally friendly and long-lasting.

Precision matching of all-tooth machine threads: Standard metric machine threads (such as M2-M8), regular pitch, smooth insertion, closely compatible with standard nuts or pre-tapped threads, reliable connection strength.

Comprehensive specifications and precise dimensions: Provide multiple specifications from M2 to M8 (length is expressed as d*L, such as M4 * 20 without the head thickness), standardized dimension parameters, meeting the assembly requirements for different thickness workpieces.

Our Strength

·  Direct from manufacturer to customer, On time delivery

·  Completely fastener products,offers one - stop shopping service.

·  High quality and competitive price, saving your cost.

·  Product complies with iso9001 and ts16949 certification

·  After shippment, we will offer the Material report and Test report.

Product Application

3C Electronics and Precision Instruments: Notebook computers, server cabinets, internal fixation of communication equipment, thin-head design saves space, flat surface avoids scratching internal components.

Mechanical Equipment and Automation: CNC machines, robots, panel and component connections of automated lines, internal hexagon anti-vibration and anti-loosening, stainless steel suitable for industrial environments.

Furniture and Decorative Hardware: Hardware connections for high-end furniture, cabinets, and doors and windows, large flat heads have good concealability, stainless steel prevents rust and extends service life.

Medical Devices and Food Equipment: Comply with hygiene requirements, easy to clean and disinfect, corrosion-resistant, suitable for fixing surgical instruments and food machinery shells.

Automobile and Electronic Electrical: Vehicle components, electronic control boxes, assembly of new energy equipment, balance lightweight, rust prevention and high strength requirements.

Send Inquiry

Please feel free to fill your inquiry in the form below. We will reply you in 24 hours.

Q: Are you trading company or manufacturer ?

A: We are factory

Q: How long is your delivery time?

A: Generally it is 2-5 days if the goods are in stock. or it takes around 20 days if the goods are not in stock, certainly,it is according to your quantity.

Q: Do u do Non-standard Fasteners,and How about the OEM/ODM?

A:Yes,we do Non-standard Fasteners,OEM/ODM as well,and we have 20 years more experience in this line.We have complete production line, R&D Center. Pre-sales and after-sales support. Let u no worries about the quality.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free,but u need charge the freight at the first time.

Q:Do you sell little quantity,like few hundred and few thousand?

A: It depends on the stock. if we have ,that's ok. if not,it needs MOQ.