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  1.   Screws
  2.   Stamping Parts
  3.   Machined Part
  4.   Pins
  5.   Bolts
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  7.   Washers
  8.   Rivets
  9.   Hex Wrench
  10.   Nylon & Plastic parts
Products
SEMS Screw
One consists of two or over two parts , most SEMS Screws are to be used where need to resist loose , wide washers will make screws or bolts get more support force from material , and friction coefficient between washer and material will be increased fastly once screws or bolts were screwed up .Common assemble parts are Washer and bolt or screw .

Attenton
1. Washe's diameter have to be enough large for enlarge touching area , and spread out force from screws or bolts .
2. Leave enough moving space for washer so that easy to install .

Material : Steel
Finish : Zinc
Size : Screw - M4X15
         Washer -7X7X1.5
Hardness : HV450
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