Round Self‑Locking Washers

IKING Round Self‑Locking Washers are professional supporting fastening accessories designed for weld‑on insulation pins, widely adopted in HVAC and industrial thermal insulation systems. Manufactured by China Aike Industrial Co., Ltd, these round lock washers adopt unique internal star‑split tooth structure. When pressed onto the shaft of insulation pins, the inner star‑shaped teeth bite tightly to achieve stable self‑locking and anti‑vibration effect, preventing insulation layers from shifting or falling off under mechanical vibration and temperature changes.

We supply two main material grades: galvanized carbon steel and stainless steel 304 / 316. Galvanized carbon steel delivers cost‑effective anti‑corrosion performance for ordinary indoor ventilation projects. Stainless steel variants perform excellently in high‑humidity, corrosive, outdoor and marine working environments. The round contact surface evenly distributes pressure and avoids piercing soft thermal insulation media. No special installation tools are required; workers can finish mounting by hand, greatly raising field construction efficiency. As critical matching parts of insulation fastening systems, our round self‑locking washers keep long‑time stable clamping performance for insulation cotton, duct liner and other thermal‑preservation materials.

Specifications

• Material: Galvanized carbon steel, Stainless Steel 304, Stainless Steel 316
• Structure: Round outline with internal star‑split self‑locking teeth
• Compatible parts: Matched with standard weld‑on perforated insulation pins
• Surface treatment: Electro‑galvanized, hot‑dip galvanized, passivation for stainless steel
• Available sizes: Multiple outer‑diameter options for different insulation thickness
• Core features: Self‑locking, anti‑vibration, anti‑loosening, uniform pressure distribution, hand‑installable

• Custom service: Custom stamping dimensions and special surface treatment are acceptable based on customer drawings or samples, subject to MOQ requirements

  Application

  1. HVAC ventilation system: Fasten duct liner and external thermal insulation layers for air‑conditioning ducts, fresh‑air ducts and smoke exhaust ducts.
  2. Industrial equipment insulation: Fix insulation materials on boilers, heat exchangers, storage tanks and power‑plant auxiliary equipment.
  3. Industrial pipeline insulation: Cooperate with weld‑on insulation pins to hold thermal and cold‑insulation layers of metal pipelines.
  4. Marine & offshore projects: Stainless‑steel‑grade round self‑locking washers fit ship ventilation and offshore‑platform thermal‑preservation scenarios.
  5. Building fire‑proof insulation: Match insulation pins to secure fire‑resistant insulation materials inside building ventilation facilities.

  This product works perfectly with our full series of weld‑on insulation pins, forming a complete and reliable fastening solution for thermal‑insulation construction.

  

   

  About Our Company

  China Iking Industrial Co.,Ltd is a professional manufacturer and exporter specialized in the R&D, production and sales of insulation fasteners and stud welding series products. Focusing on the industrial insulation accessory industry for many years, the company has complete automated production lines, including stamping, welding, surface anti-corrosion treatment and finished product precision testing, achieving integrated production from raw materials to finished products.

  Our core products cover CD weld insulation pins, self-adhesive insulation pins, arc welding studs, insulation washers, locking caps and customized insulation fasteners. All products pass strict quality inspection and comply with ISO international quality system standards and global industrial engineering specifications. We support OEM and ODM customized processing according to customer drawings, samples and project special requirements. Our products are exported to Europe, Southeast Asia, the Middle East, Africa and other more than 30 countries and regions. We always adhere to high-quality products, competitive prices and efficient after-sales service to provide one-stop insulation fixing solutions for global engineering contractors, distributors and factory customers.

  FAQS

  Q1: What is the core advantage of cup head insulation pins compared with ordinary weld pins?

  A: The unique cup arc head structure can evenly press the insulation surface without scratching or crushing soft insulation materials. It ensures flat and beautiful construction effect, while improving the overall fixing firmness, which is more suitable for high-standard finish insulation projects.

  Q2: What welding equipment is suitable for installation?

  A: It is fully compatible with conventional CD capacitor discharge stud welding machines. The short-cycle welding causes no deformation to thin metal sheets, with fast construction speed and high one-time welding success rate.

  Q3: Can you provide customized sizes and special surface treatments?

  A: Yes. We support customized pin length, pin diameter and cup head size. Special anti-corrosion treatments can be customized for harsh working environments such as high humidity and salt spray.

  Q4: What accessories need to be matched for complete installation?

  A: It needs to be used with supporting self-locking washers or dome caps. The accessories can lock the insulation layer firmly to prevent displacement and falling off, ensuring the long-term stability of the insulation system.

  Q5: What is your product quality and delivery guarantee?

  A: All products are strictly inspected before delivery to ensure stable welding performance and anti-corrosion quality. Standard specifications are in stock for quick shipment, and customized orders can be completed within 15–25 working days.

  For price inquiries, please feel free to contact us.