Sifely S Wi-Fi Lock Screw details

Here are the screw information of Sifely Wi-Fi Lock.

Item	Type	Size	Image
STEP2 screw	Cross Head Countersunk Self-Tapping Screw	M4*20(MM)
STEP 3.1 screw	half - tooth screws	M4*25(MM)
STEP 4 screw	Cross Head Countersunk Screw	X3 Used for 1-3/8'' (30mm) to 1-3/4 (45mm) Door Thickness M4*30(MM)
	Cross Head Countersunk Screw	X3 Used for 1-1/2'' (40mm) to 2-1/4''(55mm) Door Thickness M4*40(MM)
STEP 6 screw	Cross Head Countersunk Screw	M4*16(MM)

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