Socket Button Screws (ISO 7380-1)

uestion: What are Metric Socket Button Screws?

Answer: Metric Socket Button Screws, also known as Round Screws or Dome Screws, are low-profile fasteners with a rounded head that features no sharp edges for safety and aesthetics. They feature a hexagon socket (Allen) drive and are often used for their decorative qualities. They are manufactured according to ISO 7380.

Question: Are button head cap screws better than socket head screws?

Answer: Button head cap screws offer advantages in specific applications. Their low-profile, rounded head provides a safer finish with no sharp edges and is often chosen for its aesthetic appeal. They are ideal where a decorative finish or enhanced safety is a priority.

Question: What is the difference between a button head and a cap head?

Answer: The primary difference is the head profile. A button head has a low-profile, rounded (dome-shaped) head, while a socket head cap screw typically has a taller, cylindrical head. The button head design eliminates sharp edges for improved safety and aesthetics.

Question: What is the DIN or GB equivalent of ISO 7380-1?

Answer:  The GB equivalent of ISO 7380-1 is GB 70.1.

Question: What is ISO 7380-1? What is ISO 7380-2? What is the difference between ISO 7380-1 and ISO 7380-2?

Answer: ISO 7380-1 is the international standard for Metric Socket Button Head Screws. ISO 7380-2 specifies the same screws but with a conical bearing surface. The key difference is that ISO 7380-2 fasteners are designed for use with countersunk washers.

Question: What are the available materials and strength grades for this series of Metric Socket Button Screws?

Answer: These screws are available in a range of materials including Stainless Steel (A2 and A4 grades are mentioned for captive screws), Titanium, Aluminium, 10.9 Hardened Steel, and the specialist thermoplastic PEEK.

Question: Is Fullerkreg a manufacturer of Button Head Socket Cap screw? Where are they produced?

Answer: Based on the provided materials, Fullerkreg offers a range of Button Head Socket Screws, including standard, captive, and security types. The specific production location is in CHINA.

Question: Button Head Socket Cap screw Size chart & Button Head Socket Cap screw Dimensions pdf

Answer: Fullerkreg Metric Socket Button Head Screws are available in diameters ranging from M2 up to M16, with lengths from 3mm to 120mm.  For a detailed dimensions PDF, please contact Fullerkreg directly.

Active Stock List (All items are currently in stock)：

PIC	PRODUCT	SIZE	GRADE	FINISH	THREAD
	ISO 7380 Button Head Socket Cap Screw A2 Stainless	M2 to M12	A2 Grade 70	-	Coarse
	ISO 7380 Button Head Socket Cap Screw A4 Stainless	M2 to M12	A4 Grade 70	-	Coarse
	ISO 7380 Button Head Socket Cap Screw Grade 10.9 - Black	M2 to M16	10.9 Grade	Black	Coarse
	ISO 7380 Button Head Socket Cap Screw Grade 10.9 - Zinc CR3	M2 to M16	10.9 Grade	Zinc CR3	Coarse
	ISO 7380 Button Head Torx Socket Cap Screw – A2 Stainless	M3 to M10	A2 Grade 70	-	Coarse
	ISO 7380 Button Head Torx Socket Cap Screw Grade 10.9 Zinc	M3 to M8	10.9 Grade	Black	Coarse