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#1376 06/18/18 02:13 PM
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Hi, is it ok to use m5 allen key bolt instead of the pan head type described in j442 ? " Use pan head (or smaller head diameter) style screw of size M5."

The allen key bolt has a smaller head than a pan head.

/R

google search bolt Picture


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Changing the head type is fine as long as the head isn't larger, thus causing an excessive "shaded" area.

EI uses hex (Allen) screws in their products. Recently I heard someone report that star (Torx) heads have a longer life span than hex style.


Dave Barkley
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The heads height is not defined in the spec. Is it then ok to use the cylindrical bolts that I linked to as long as the diameter is smaller than a typical pan head and its not leaving an excessive shade ?
I think the hex or torx is muche more user friendly as you say.


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Just be careful of heads that are too tall, as they can shade when the blast stream comes in at lower angles. wink


Dave Barkley
EI SPT Director, Peening Preceptor & Product Engineer

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