Socket Countersunk Screws (DIN 7991)

Question: What are Metric Socket Countersunk Screws?

Answer: Metric Socket Countersunk Screws feature a countersunk head type, which allows them to sit flush with their target housing. The socket head of these screws makes them ideal for use alongside Fullerkreg's Hex Drive Bits or Allen Keys & Wrenches. They are designed to be used alongside pre-drilled countersunk recesses.

Question: What is the ISO and GB equivalent of DIN 7991?

Answer: The international standard ISO 10642 is the equivalent of DIN 7991 for socket head countersunk screws and  The CHINA standard GB70.3-2008 is the equivalent of DIN 7991

Question: What is the difference between DIN 912 and 7991?

Answer: The primary difference lies in the head style. DIN 7991 specifies a countersunk (flat) head , while DIN 912 (which is equivalent to ISO 4762) specifies a hex socket head cap screw with a cylindrical head.

Question: What is DIN 7991? What is ISO 10642 ? What is the difference between ISO 10642 and DIN 7991?

Answer: DIN 7991 and ISO 10642 both refer to the standard for Metric Socket Head Countersunk Screws .

They are largely equivalent standards. A key specified requirement in these standards is the minimum thread length .

Question: What material is DIN 7991?

Answer: Fullerkreg's Metric Socket Countersunk Screws are available in a range of materials including A2, A4, and Bumax Stainless Steel, as well as 10.9 and 12.9 High Tensile Steel.

Question: Is Fullerkreg a manufacturer of DIN 7991 / ISO 10642 Flat Head Countersunk Socket ? Where are they produced ?

Answer:  Fullerkreg supplies a range of Metric Socket Countersunk Screws from China.

Question: Flat Head Countersunk Socket Size chart & Metric Socket Countersunk Screws Dimensions pdf

Answer: Fullerkreg’s Metric Socket Countersunk Screws are available in thread sizes ranging from M2 to M24, and lengths from 3mm up to 200mm. For a detailed size chart and dimensions PDF, please contact Fullerkreg directly.

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

PIC	PRODUCT	SIZE	GRADE	FINISH	THREAD
	DIN 7991 Flat Head Countersunk Socket Cap Screw A2 Stainless	M2 to M24	A2 Grade 70	-	Coarse
	DIN 7991 Flat Head Countersunk Socket Cap Screw A4 Stainless	M2 to M24	A4 Grade 70	-	Coarse
	DIN 7991 Flat Head Socket Cap Screw Grade 8.8-Black	M3 to M24	8.8 Grade	Black	Coarse
	DIN 7991 Flat Head Socket Cap Screw Grade 8.8-Zinc CR3	M3 to M24	8.8 Grade	Zinc CR3	Coarse
	DIN 7991 Flat Head Countersunk Socket Cap Screw Grade 10.9-Black	M2 to M36	10.9 Grade	Black	Coarse
	DIN 7991 Flat Head Countersunk Socket Cap Screw Grade 10.9-Zinc CR3	M2 to M36	10.9 Grade	Zinc CR3	Coarse
	DIN 7991 Flat Head Socket Cap Screw Grade 12.9	M3 to M10	12.9 Grade	Black	Coarse