Stainless Steel Torx Sems Screw with EPDM Washer

Product: Torx Sems Screw
Material: Stainless Steel 304
Head Type: Pan Head
Drive Style: Torx 20
Thread Diameter: M4
MOQ: 10,000pcs
Certificate: SGS/RoHS/ISO9001/IATF16949


Sems Screw is a bolt combination with a permanently attached washer or set of washers. It is also referred to as captivated washers, screw/bolt-washer assemblies or combi bolts.

Sems Fastener allow for fast installation, permanence, and easy adaptability to many applications. When using Sems machine screw, there’s no need to worry about the washer going missing; this, in turn, helps extend product life and ensure reliable performance.

SEMS screws feature attached washers in the following style options: internal, external and split lock washers,square cone washer, and double washers. King Tower offers over 300 distinct size and style combinations in our SEMS screw selection, all of which can be quickly and easily located on our site.

King Tower Accept Sample / Drawing Custom Sems Screw

Custom Sems Screw
Custom Sems Screw

Why Choose King Tower Hardware

About King Tower

About Us 2

  1. Non-standard Custom|On-demand Customization|Factory Direct Sales.
  2. Over 150 units equipment, monthly capacity ups to 200 tons.
  3. A variety of materials for you to choose. Stainless Steel,Carbon Steel, Aluminum, Brass, Titanium.
  4. A variety of surface treatments, the strength is as high as grade 12.9.
  5. Have a complete production process. Ensure product dimensional tolerances and appearance.
  6. There are Domestic and Foreign Sales Team, 24 Hours on Line. You can contact through email/phone/whatsapp/wechat ect.
  7. More Than 10 Years of Foregin Trade Export Experience with the Ability to Deal with Market Risks.
  8. Participate in an Exhibition Every Two Years.

Q1: Are you trading company or manufacturer ?
A1: We are manufacture.

Q2: Can I visit your factory?
A2: Yes! Warmly welcome to visit our factory. Video or Phone Online Visting is Available.

Q3:What is the product qualitity control?
A3:Our company has advanced production and testing equipment .Every products will be 100% inspected by our QC department before shipment.

Q4:How about your price?
A4:High quality products with reasonable price. The price base on order quantity.

Q5:Could you provide free samples?
A5:We can provide free samples for standard fastener or which we have existing tooling, but the clients will pay the Express charges.

Q6: What’s your Delivery Time?
A6:Standard parts: 7-15 days,Non-standard parts: 15-25 days.We will make the delivery as soon as possible with the guarantee quality.

Q7: How should I order and make payment?
A7:By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.

Need custom special fasteners for your industry?

As a experienced fasteners manufacturer with factory equipped with precision machines, we can provide, from design to production, one-stop solution for you.

About King-Tower

Dongguan King-Tower Hardware Co.; Ltd a manufacturer of fastener, has been supplying non-standard and custom made screw since 2002. According sample or drawing requirements, provide one-stop custom services to solving your custom screw needs. King-Tower is committed to offering you the widest range of sems screw, anti-theft screw, thread-locking screw and stainless steel screw and more. If you have any fastening inquiries, our engineering department will be glad to help with our many custom screw options.

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