This listing is for Socket Button Head Screws in Metric Coarse Thread of M2.5, M3, M4, M5, and M6 in 10.9 Grade High Tensile Steel, and they are Standard ISO 7380. There are various Lengths and Pack Sizes available, please choose using the drop down menus. Further details are as follows:

M2.5

Diameter - M2.5 (2.5mm)
Pitch - 0.45mm
Socket Wrench Size - 1.5mm
Head Diameter - 4.5mm
Head Depth - 1.5mm
These are fully threaded

M3

Diameter - M3 (3mm)
Pitch - 0.50mm
Socket Wrench Size - 2mm
Head Diameter - 5.7mm
Head Depth - 1.65mm
These are fully threaded

M4

Diameter - M4 (4mm)
Pitch - 0.70mm
Socket Wrench - 2.5mm
Head Diameter - 7.6mm
Head Depth - 2.2mm
These are fully threaded 

M5

Thread Diameter - M5 (5mm)
Pitch - 0.80mm
Socket Wrench Size - 3mm
Head Diameter - 9.5mm
Head Depth - 2.75mm
These are fully threaded

M6

Diameter - M6 (6mm)
Pitch - 1.0mm
Socket Wrench Size - 4mm
Head Diameter - 10.5mm
Head Depth - 3mm
These are fully threaded

The length of the button head screw is measured from the underside of the head to the end of the thread.
Any product of the company can be customized. If you have any needs, please feel free to contact us

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.