Knurled Thumb Screw, M4X12mm Brass Shoulder Bolt Step Grip Knob Fastener

• Customization: Available
• Material: Brass
• Type: T Head
• Model NO.: M4x12mm Knurled Thumb Screw
• Connection: Common Bolt
• Head Style: Knurled Thumb Screw
• Standard: DIN, ANSI, GB, JIS, BSW, GOST
• Grade: 10.9
• Application: Machinery
• Finish: Gold
• Hardness: 8.8/10.9/12.9
• Titanium Alloy: Q235/35K
• Stainless Steel: A2(304),DIN 912
• Head Style.: Inner Hexagon/Cylindrical Head
• Item Length: 10/15/20/25/30/35/40/50/60/70mm
• Fastener Size: M4
• Certification: as, an
• Thread Coverage: Fully Threaded
• Transport Package: Carton Box
• Specification: M4x20mm
• Trademark: hongniu
• Origin: Yangzhou, China
• Production Capacity: 5000000pieces/Year

Product Description

Any product of the company can be customized. If you have any needs, please feel free to contact us
Made of brass, this thumb screw Knob is good for needs requiring high appearance, has corrosion resistance, rust resistance, good wear resistance, high hardness, well-fastening function, and long-lasting service than other materials.
Applied in home appliances, communications industry, automotive industry, etc. Widely used in the installation, maintenance, and fixing of various daily needs: such as light covers, musical instruments, mechanical assemblies, electronic equipment, communication equipment, ornamental products, and so on.
No tools are required. Knurled head thumb screws provide a solid grip and smooth surface, making it easier to tighten or loosen the fastener by hand. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.

Thread Size: M4 x 12mm / M4 x 0.47"(D*L); Thread Pitch: 0.7mm; Head Size: 9.5 x 8mm / 0.37" x 0.31"(D*T); Package Content: 4pcs x Knurled Thumb Screws
Material: Knurled thumb screws are made of brass, ease of machining, and an attractive appearance, rust resistance, corrosion resistance, good wear resistance, high strength, and good fastening function.
Feature: The thumb screw has a round knurled shoulder head, which provides a better grip and makes it easier to tighten or loosen the screw.
Application: Knurled head thumb screws are widely used in home appliances, electrical appliances, machinery, instruments and other DIY projects. They can be used to fix panels, furniture, lampshades, musical instruments, mechanical components, electronic equipment, communication equipment, decorative products, etc.
Advantage: Thumb screws can be installed and fastened without any tools, which is convenient. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.

Main products

About us
Jiangsu Hongniu Automotive Parts Co., Ltd.  was founded in June 2000. Located in Tangzhuang Town, the eastern suburbs of the historic and cultural city of Gaoyou, with convenient transportation. The company covers an area of 35000 square meters and currently has over 300 employees, including 70 high-level and intermediate professional and technical personnel. Registered capital of 20 million yuan, total assets of 78 million yuan, and fixed assets of 56 million yuan. Main products: Series standard parts (including national standard and non-standard parts); Various types of automotive parts, hydraulic components, castings, and wind power products;  aerospace fasteners, etc. Widely used in industries such as aerospace, machinery, wind power, textiles, automotive manufacturing, petroleum, forging, etc. We have maintained good cooperative relationships with dozens of large and medium-sized enterprises in China, and are highly favored by our customers with our good reputation and excellent quality.

FAQ
Q1: What is your main products? 
A1: Our main sale products: series standard parts (including national standard and non-standard parts); Various types of automotive parts, hydraulic components, castings, and wind power products;  aerospace fasteners, etc. 

Q2: How long is your delivery time? 
A2: Generally it is 10-15 days if the goods are in stock. or it is over 30 days if the goods are not in stock, it is according to quantity. 

Q3: What is your payment method? 
A3: 30% value of T/T in advance and other 70% balance on B/L copy. For small order less than 5000USD, would suggest you pay 100% inadvance to reduce the bank charges. 

Q4: Can you provide a sample? 
A4: Sure, Our sample is provided free of charge, but not including courier fees. 

Q5: Can you customize the product according to the requirements of drawing sheets and so on? 
A5: Sure, we can customize the products according to your requirements of drawing sheets, samples and so on. Product information include: material, surface treatment, specification and amount.