External thread sems screw is the screw with an external thread washer, the washer is also known as a tooth lock washer, external thread sems screw usually used on the part needs to be locked tightly. External thread washer is a washer with serrations that extend radially inward or outward to bite into the bearing surface. This type of washer is especially effective as a lock washer when used with a soft substrate, such as aluminum or plastic, and can resist rotation more than a plain washer on hard surfaces, as the tension between washer and the surface is applied over a much smaller area (the teeth). There are four types: internal, external, combination, and countersunk. The internal style has the serrations along the inner edge of the washer, which makes them more aesthetically pleasing. The external style has the serrations around the outer edge, which provides better holding power, because of the greater circumference. The combination style has serrations about both edges, for maximum holding power. The countersunk style is designed to be used with flat-head screws. Ever Hardware provides custom-made fasteners and customizable packaging.

The direction of Ever Hardware’s work.

  • Provide our client with a smaller MOQ and a broad range of products.
  • More stringent quality management based on our current factory.
  • Shortly response time because of rich resources in our hands.
  • A more professional process as we have years of experience.
Category External Thread Sems Screw
Finish Galvanization
Thread type Metric/Imperial/According to Request
Material Stainless Steel/Carbon Steel/Aluminum/Brass/Copper, etc.
Brand Ever Hardware
Place of origin China Mainland
Size option M1.0 to M18/#0 to 1/2″
External Thread Sems Screw Stainless Steel Passivation Metric Machine

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What Client’s Say

Those look great! All the specs look perfect.
Kent De Mond
Perfect ! This is that I need.
Hernán Balboa
Thank you very much.
The bolts are perfect and they’re fits good.
Ashley
The nut fits perfect on our M2.5 screw part.
Height is also ok.
Mirjam
I tested the bolts this morning and they are perfect. Thank you so much.
Bill McDonald

We are professional on precision external thread sems screw and custom-made fasteners services!

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