Self Drilling Flanged Hexagon Bolts (DIN 7504K)

Question: What is DIN 7504K?

Answer: DIN 7504 K is a standard for self-drilling screws with a hex head . The current international norm for this type of screw is ISO 15480 .

Question: What is the equivalent of DIN 7504?

Answer: The direct equivalent of DIN 7504 is ISO 15480 . ande UNI 8117 K in AU.

Question: Do I need to drill a hole for a Self-drilling screw?

Answer: No, self-drilling screws do not require a pre-drilled pilot hole in the material they are fastening into, as they have a drill point that creates the hole . However, the top material being fastened must have a clearance hole to allow the screw to pass through and prevent a weak joint .

Question: What is the difference between a normal screw and a Self-drilling screw?

Answer: The key difference is that a self-drilling screw has a drill-shaped point that allows it to drill its own pilot hole and form mating threads in a single operation . A normal self-tapping screw lacks this drilling point and requires a separate, pre-drilled pilot hole before it can be installed .

Question: How to measure self-drilling screw size?

Answer: The provided materials specify that the size is determined by the screw thread (d) and the length (l) . For example, common thread sizes include ST4.2, ST4.8, and ST5.5, with lengths ranging from 13mm to 50mm .

Question: What are the available materials for this series Self-Drilling Screw (Hex)?

Answer: According to the standard, these screws can be made from steel (ISO 10666) or stainless steel (A2) , stainless steel (A4) or stainless steel (sus410). 

Question: Is Fullerkreg a manufacturer of Self-Drilling Screw (Hex)? Where are they produced?

Answer: Yes.

Question: Fullerkreg Self-Drilling Screw VS PTA Self-Drilling Screw, which one has better quality?

Answer: PTA is a well-recognized brand in the industry known for its excellent product quality. Fullerkreg also strictly adheres to Self-Drilling Screw, offering various high-performance materials and specialized options, with additional competitive advantages in pricing.

PIC	PRODUCT	SIZE	GRADE	FINISH	THREAD
	Self Drilling Flanged Hexagon Bolts (DIN 7504K) - Stainless Steel (A2)	No.6 (3.5mm) to No.14 (6.3mm)	A2 Grade 70	-	Coarse Full
	Self Drilling Flanged Hexagon Bolts (DIN 7504K) - Stainless Steel (A4)	No.6 (3.5mm) to No.14 (6.3mm)	A4 Grade 70	-	Coarse Full
	Self Drilling Flanged Hexagon Bolts (DIN 7504K) - Stainless Steel (SUS410)	No.6 (3.5mm) to No.14 (6.3mm)	-	-	Coarse
	Self Drilling Flanged Hexagon Bolts (DIN 7504K) - Carbon Steel Zinc Cr3	No.6 (3.5mm) to No.14 (6.3mm)	-	Zinc Cr3	Coarse