Self Drilling Screw Carbon Steel Stainless Steel High Quality Competitive Price China Manufacturer DIN7504K

Product Introduction

Self Drilling Screws are people's new inventions in recent years. Its tail is drill-tailed or pointed-tailed. Self Drilling Screws can directly drill, tap and lock on steel, wood and other materials, thus greatly saving construction time.

Compared with ordinary screws, it works better. It is not easy to loosen after installation and is an ideal choice during construction.

Two carbon steel electro-galvanized self-drilling screws

Product Details

SIZE: M4.8, M5.5, M6.3

MATEAIL: Carbon Steel, Stainless Steel

STANDARD: DIN7504K, ISO15480, UNI8117K

GRADE: 4.8, 8.8, 10.9, 12.9

SURFACE TREATMENT: ZP, HDG, BLACK, Dacromet

CUSTOMIZED SUPPORT: YES

DIN7504(K) Self Drilling Screws Specifications

    Thread Size
    ST2.9
    ST3.5
    (ST3.9)
    ST4.2
    ST4.8
    (ST5.5)
    ST6.3
  


    P
    Pitch
    　
    1.1
    1.3
    1.3
    1.4
    1.6
    1.8
    1.8
  

    a
    max
    　
    1.1
    1.3
    1.3
    1.4
    1.6
    1.8
    1.8
  

    c
    min
    　
    0.4
    0.6
    0.6
    0.8
    0.9
    1
    1
  

    dc
    max
    　
    6.3
    8.3
    8.3
    8.8
    10.5
    11
    13.5
  

    min
    　
    5.8
    7.6
    7.6
    8.1
    9.8
    10
    12.2
  

    e
    min
    　
    4.28
    5.96
    5.96
    7.59
    8.71
    8.71
    10.95
  

    k
    max
    　
    2.8
    3.4
    3.4
    4.1
    4.3
    5.4
    5.9
  

    min
    　
    2.5
    3
    3
    3.6
    3.8
    4.8
    5.3
  

    kw
    min
    　
    1.3
    1.5
    1.5
    1.8
    2.2
    2.7
    3.1
  

    r
    max
    　
    0.4
    0.5
    0.5
    0.6
    0.7
    0.8
    0.9
  

    s
    max
    　
    4
    5.5
    5.5
    7
    8
    8
    10
  

    min
    　
    3.82
    5.32
    5.32
    6.78
    7.78
    7.78
    9.78
  

    dp
    2.3
    2.8
    3.1
    3.6
    4.1
    4.8
    5.8
  

    Drilling range(thickness)
    0.7~1.9
    0.7~2.25
    0.7~2.4
    1.75~3
    1.75~4.4
    1.75~5.25
    2~6
  

Thread Size	ST2.9	ST3.5	(ST3.9)	ST4.2	ST4.8	(ST5.5)	ST6.3
P	Pitch		1.1	1.3	1.3	1.4	1.6	1.8	1.8
a	max		1.1	1.3	1.3	1.4	1.6	1.8	1.8
c	min		0.4	0.6	0.6	0.8	0.9	1	1
dc	max		6.3	8.3	8.3	8.8	10.5	11	13.5
min		5.8	7.6	7.6	8.1	9.8	10	12.2
e	min		4.28	5.96	5.96	7.59	8.71	8.71	10.95
k	max		2.8	3.4	3.4	4.1	4.3	5.4	5.9
min		2.5	3	3	3.6	3.8	4.8	5.3
kw	min		1.3	1.5	1.5	1.8	2.2	2.7	3.1
r	max		0.4	0.5	0.5	0.6	0.7	0.8	0.9
s	max		4	5.5	5.5	7	8	8	10
min		3.82	5.32	5.32	6.78	7.78	7.78	9.78
dp	2.3	2.8	3.1	3.6	4.1	4.8	5.8
Drilling range(thickness)	0.7~1.9	0.7~2.25	0.7~2.4	1.75~3	1.75~4.4	1.75~5.25	2~6

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