DIN EN ISO 10510 Standard Dimensions for Combi-selftapping screws with captive washer - sems
Technical History and International Equivalents of DIN EN ISO 10510
Combi-selftapping screws with captive washer - sems
This standard (DIN 10510 and equivalents) specifies the requirements for tapping screws and plain washer assemblies with thread sizes from ST2,2 to ST9,5 inclusive, flat seating heads and mechanical properties as specified in ISO 2702.
Sems screws are often called: Captivated Washers, Screw Washer Assemblies or Combi Screws. They are a combination of a screw or bolt with a built in unloosable and free to rotate washer or set of washers. The technology has brought benefits to assembly lines the world over. Sems screws are being used to make product assembly more cost effective in many industries including automotive and micro electronics.
Dimensional Drawing and Technical Diagrams
Key Dimensions and Technical Parameters
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Dimensions in mm - source DIN 10510 Publication date 7/2011 Supersedes DIN 10510: 12/1999 |
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d Thread size |
a max | Dimensions of plain washers | |||
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Normal series
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Large series
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h nom
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d2 max
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h nom
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d2 max
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ST 2.2
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0.8
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1
|
5
|
1
|
7
|
|
ST 2.9
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1.1
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1
|
7
|
1
|
9
|
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ST 3.5
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1.3
|
1
|
8
|
1
|
11
|
|
ST 4.2
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1.4
|
1
|
9
|
1
|
12
|
|
ST4.8
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1.6
|
1
|
10
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1.6
|
15
|
|
ST 5.5
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1.8
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1.6
|
12
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1.6
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15
|
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ST 6.3
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1.8
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1.6
|
14
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1.6
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18
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ST 8
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2.1
|
1.6
|
16
|
2
|
24
|
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ST 9.5
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2.1
|
1.6
|
20
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2.5
|
30
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