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304 Countersunk Cross Drill Tail Screw

Name: 304 Countersunk Cross Drill Tail Screw
Brand: Shenzhen Xintegu Hardware Co.,Ltd.

The 304 Countersunk Cross Drill Tail Screw is a superior fastening solution crafted from high-grade 304 stainless steel, known for its exceptional corrosion resistance and durability. This screw features a self-drilling tail that allows for quick and efficient installation without the need for pre-drilling, saving time and labor costs. The countersunk head design ensures that the screw sits flush with the surface of the material, providing a neat and clean appearance ideal for decorative and structural applications alike. Its cross-shaped drive offers improved torque control and ease of driving.

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Specifications of 304 Countersunk Cross Drill Tail Screw

Thread size (d)
P	Pitch
a	Maximum
d_k	theory	Maximum
	Actual value	Maximum
		Minimum
k	Maximum
r	Maximum
Slot number
M₁	Reference
depth	H-Type	Maximum
		Minimum
M₂	Reference
depth	Z-Type	Maximum
		Minimum
Drilling range (plate thickness)	≥
	≤
Lg (minimum)
Thousand pieces of steel weigh ≈ kg

ST2.9	ST3.5	ST4.2	ST4.8	ST5.5	ST6.3
1.1	1.3	1.4	1.6	1.8	1.8
1.1	1.3	1.4	1.6	1.8	1.8
6.3	8.2	9.4	10.4	11.5	12.6
5.5	7.3	8.4	9.3	10.3	11.3
5.2	6.9	8	8.9	9.9	10.9
1.7	2.35	2.6	2.8	3	3.15
1.2	1.4	1.6	2	2.2	2.4
1	2	2	2	3	3
3.2	4.4	4.6	5.2	6.6	6.8
2.1	2.4	2.6	3.2	3.3	3.5
1.7	1.9	2.1	2.7	2.8	3
3.2	4.3	4.6	5.1	6.5	6.8
2	2.2	2.5	3.05	3.2	3.45
1.6	1.75	2.05	2.6	2.75	3
0.7	0.7	1.75	1.75	1.75	2
1.9	2.25	3	4.4	5.25	6
-	-	-	-	-	-
-	-	-	-	-	-
①, The working performance of the drill bit (diameter dp) shall be in accordance with GB/T 3098.11.