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Screw, nuts and washers

 

FAQ

 

  1. Why do some long CHC and FHC screws have the same part number but have different lengths of thread?
  2. Can you supply custom made screws?

 

1. Why do some long CHC and FHC screws have the same part number but have different lengths of thread?

Generally these screws are used for assembling parts together and only the end of the thread is actually used.

Short screws are normally threaded over their whole length.  For longer screws and conforming to current standards, the threaded length is normally 2 to 5 times the nominal diameter.

The length of any un-threaded part of the shaft will depend on the manufacturer.  We would normally recommend the CHC/FHC fully threaded ranges because they work under traction.  If you require part of the shaft to be smooth, for example to support a bearing or another component, we would suggest the use of the SHS, SHSS or HSS ranges of shoulder screws.

 

2. Can you supply custom made screws?

Yes we can supply screws manufactured to meet your specifications. (Minimum quantities normally apply).

Please contact our Technical department on +33 (0) 437 496 496 who will provide you with a quotation very quickly.

Technical files


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