Socket Cap Head Screws (DIN 912 / ISO 4762)

Question: What is a socket head cap screw?

Answer: A socket head cap screw is a fastener featuring an internal socket drive designed for use with a hex key, also known as an Allen key. This is why they are commonly referred to as Allen Key Bolts or Socket Screws. They are available in fully threaded or partially threaded forms.

Question: What is the ISO 4762 specification?

Answer: The ISO 4762 specification is an industry standard that defines the requirements for metric socket head cap screws. Fullerkreg's range of Cap Screws is manufactured in accordance with this standard.

Question: socket head cap screw ISO standard and DIN standard and GB  standard?

Answer: Regarding the ISO 4762 standard for hex socket head cap screws, the corresponding German (DIN) and Chinese National (GB) standards are as follows:

*Subtle Differences: Although these three standards are technically equivalent at their core, there might be slight variations in certain details (such as dimensional tolerance ranges, specific requirements for surface treatment). For applications with stringent requirements, consulting the full original standard text is recommended.

*In most cases, hex socket head cap screws marked with ISO 4762, DIN 912, or GB/T 70.1 can be used interchangeably.

Question: Socket head cap screw Size chart & Socket head Cap Screw Dimensions pdf

Answer: Fullerkreg offers Metric Socket Cap Screws in sizes from M1.4 to M30, with lengths ranging from 2mm to 300mm. Both partially threaded and fully threaded varieties are available. For a detailed dimensions PDF, please contact Fullerkreg directly.

Question: What are the available materials, strength grades for this series of Socket Cap Head Screws?

Answer: This series is available in a wide selection of materials including A2, A4, A4-80, Duplex and Bumax Stainless Steel, 12.9 High Tensile Steel, Aluminium, and Titanium. 

Question:Fullerkreg Allen Bolt VS YFS Socket Head Cap Screw, which one has better quality?

Answer:  YFS is a well-recognized brand in the industry known for its excellent product quality. Fullerkreg also strictly adheres to DIN 912 and ISO 4762 standards, offering various high-performance materials and specialized options, with additional competitive advantages in pricing.

Question: Is Fullerkreg a manufacturer of socket head cap screws? Where are they produced?

Answer: Yes, Fullerkreg is a manufacturer of socket head cap screws in CHINA.

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

PIC	PRODUCT	SIZE	GRADE	FINISH	THREAD
	DIN 912 / ISO 4762 Socket Cap Screw A2 Stainless Steel	M1.4 to M30	A2 Grade 70	-	Coarse Full
	DIN 912 / ISO 4762 Socket Cap Screw A4 Stainless Steel	M1.4 to M30	A4 Grade 70	-	Coarse Full
	DIN 912 / ISO 4762 Socket Cap Screw Grade 8.8-Black	M2.5 to M30	8.8 Grade	Black	Coarse
	DIN 912 / ISO 4762 Socket Cap Screw Grade 8.8-Zinc Cr3	M2.5 to M30	8.8 Grade	Zinc Cr3	Coarse
	DIN 912 / ISO 4762 Socket Cap Screw Grade 8.8 Fine Thread	M6 to M30	8.8 Grade	Black	Fine
	DIN 912 / ISO 4762 Socket Head Cap Screw Grade 10.9-Black	M3 to M48	10.9 Grade	Black	Coarse
	DIN 912 / ISO 4762 Socket Head Cap Screw Grade 10.9-Zinc Cr3	M3 to M48	10.9 Grade	Zinc Cr3	Coarse
	DIN 912 / ISO 4762 Socket Cap Screw Grade 12.9	M1.4 to M80	12.9 Grade	Black	Coarse
	ISO 4762 Socket Head Cap Screw Alloy Steel Grade 12.9	M2 to M48	12.9 Grade(Alloy steel)	Black	Coarse
	DIN 912 / ISO 4762 Socket Cap Screw Grade 12.9 Fine Thread	M5 to M56	12.9 Grade	Black	Fine