Hex Washer Head Self Drill-Zinc Plated:
Self-drilling screws for the building and construction industries. For those application fixig to steel, timber and plasterboard to steel.Self-drilling screws intended for drilling and tapping into layered or unlayered steel with a minimum total thickness of 0.9mm shall be type ASD, BSD or CSD TYPE ASD and BSD screw have spaced threads and type CSD screws have threads of UNC machine screw diameter-pitch combination with a 60 degree basic thread form.
The drill points for ASD, BSD and CSD shall be No 2, No. 3 and No. 4 designed to accommodate different panel thicknesses.
 |
 |
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Size
|
Thread Pitch
|
Drive Size
|
Drill Point Size
|
Optimum Driving Speed
|
Range Of Fastening
|
|
6 x 3/8
|
20
|
1/4"
|
#2
|
2500 rpm
|
.035 - .090
|
|
6 x 1/2
|
20
|
1/4"
|
#2
|
2500 rpm
|
.035 - .090
|
|
6 x 3/4
|
20
|
1/4"
|
#2
|
2500 rpm
|
.035 - .090
|
|
8 x 1/2
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 1/2 SLOTTED
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 5/8
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 3/4
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 1
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 1-1/4
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 1-1/2
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
8 x 2
|
18
|
1/4"
|
#2
|
2500 rpm
|
.035 - .100
|
|
10 x 1/2
|
16
|
5/16"
|
#2
|
2500 rpm
|
.035 - .110
|
|
10 x 5/8
|
16
|
5/16"
|
#2
|
2500 rpm
|
.035 - .110
|
|
10 x 3/4
|
16
|
5/16"
|
#2
|
2500 rpm
|
.110 - .175
|
|
10 x 1
|
16
|
5/16"
|
#2
|
2500 rpm
|
.110 - .175
|
|
10 x 1-1/4
|
16
|
5/16"
|
#2
|
2500 rpm
|
.110 - .175
|
|
10 x 1-1/2
|
16
|
5/16"
|
#2
|
2500 rpm
|
.110 - .175
|
|
10 x 2
|
16
|
5/16"
|
#2
|
2500 rpm
|
.110 - .175
|
|
12 x 3/4
|
14
|
5/16"
|
#3
|
2500 rpm
|
.110 - .210
|
|
12 x 1
|
14
|
5/16"
|
#3
|
2500 rpm
|
.110 - .210
|
|
12 x 1-1/4
|
14
|
5/16"
|
#3
|
2000 rpm
|
.110 - .210
|
|
12 x 1-1/2
|
14
|
5/16"
|
#3
|
2000 rpm
|
.110 - .210
|
|
12 x 2
|
14
|
5/16"
|
#3
|
2000 rpm
|
.110 - .210
|
|
12 x 3
|
14
|
5/16"
|
#3
|
2000 rpm
|
.110 - .210
|
|
14 x 3/4
|
14
|
3/8"
|
#3
|
1500 rpm
|
.110 - .250
|
|
14 x 1-1/4
|
14
|
3/8"
|
#3
|
1500 rpm
|
.110 - .250
|
|
14 x 1-1/2
|
14
|
3/8"
|
#3
|
1500 rpm
|
.110 - .250
|
|
14 x 2
|
14
|
3/8"
|
#3
|
1500 rpm
|
.110 - .250
|
|
14 x 3
|
14
|
3/8"
|
#3
|
1500 rpm
|
.110 - .250
|
|
14 x 4
|
14
|
3/8"
|
#3
|
1500 rpm
|
.110 - .250
|
Hex Washer Head Self Drill # 4 Point-Zinc Plated
|
Size
|
Thread Pitch
|
Drive Size
|
Drill Point Size
|
Optimum Driving Speed
|
Range Of Fastening
|
|
12 x 7/8
|
24
|
5/16"
|
#4
|
1000 rpm
|
.210 - .345
|
Hex Washer Head Self Drill # 5 Point-Zinc Plated
|
Size
|
Thread Pitch
|
Drive Size
|
Drill Point Size
|
Optimum Driving Speed
|
Range Of Fastening
|
|
12 x 1-1/4
|
24
|
5/16"
|
#5
|
1000 rpm
|
.250 - .500
|
DIN7504:
DIN7504 K: Ind. He x Waher Head
DIN7504 P: Phil Flat Head
DIN7504 N: Phil Pan Head
Dimensions and designations
Screw Types and Designations
|
Type
|
lllustration
|
Qther Dimensions As In
|
Example of Designation
|
| K |
 |
DIN 6928 |
Screw DIN 7504-ST4, 2 x 13-K |
| L |
 |
DIN 6928; slot dimensions as in DIN 962 |
Screw DIN 7504-ST4, 2 x 13-L |
| M |
 |
ISO 7049 |
DIN 7504-ST4, 2 x 13-M-H |
| O |
 |
ISO 7050 |
DIN 7504-ST4, 2 x 13-O-H |
| R |
 |
ISO 7051 |
DIN 7504-ST4, 2 x 13-R-H |
|
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