Product Description：
Name: Hex Socket Head Hollow Screws Bolts
Material: 304 Stainless Steel
Standard: DIN912
Size: Thread Diameter x Length x Hole Diameter (Excluding Head Length)
e.g.: M4x8mm, Hole 2mm (Thread Diameter 4mm, Length 8mm, Hole Diameter 2mm)
Thread Diameter:
M4(4mm) / M5(5mm) / M6(6mm) / M8(8mm)/ M10(10mm) / M12(12mm) / M14(14mm) / M16(16mm) / M20(20mm)
Length:
8mm/10mm/12mm/16mm/20mm/25mm/30mm/35mm/40mm/
45mm/50mm/60mm/70mm/80mm/90mm/100mm
(Excluding Head Length)
Bore Diameter:
2mm/2.2mm/3.2mm/4.2mm/5.2mm/6.2mm/7.2mm/8.2mm/
10.2mm/13mm
Pitch:
M4 - Thread Pitch 0.7mm
M5 - Thread Pitch 0.8mm
M6 - Thread Pitch 1mm
M8 - Thread Pitch 1.25mm
M10 - Thread Pitch 1.5mm
M12 - Thread Pitch 1.75mm
M14 - Thread Pitch 2mm
M16 - Thread Pitch 2mm
M20 - Thread Pitch 2.5mm
Customer service online time：
Our working hours are from 8:30 am to 17:30 pm Beijing time Monday to Saturday，(excluding Chinese holidays and special circumstances).
If the customer service does not reply to the message in time, please be patient, we will reply you immediately when we see the message.
Issue Resolution：
If you encounter any problems with your order, we are here to help. Please reach out to us, and we will do our best to address and resolve any issues in a timely manner.
