How TEC Series Washers Work

TEC Series washers are designed with cams on one side and radial teeth on the other. During installation, the radial teeth cause one-half of the washer to be seated to the bolt or nut, while the other half is seated to the joint material. When subjected to load or vibration, traditional fasteners can loosen over time. However, with TEC Series washers, the radial teeth are firmly seated to the mating surfaces to prevent any movement in the loosening direction. This is where the unique cam design comes into play. The cam angle of the washers is greater than the thread pitch angle of the bolt, creating a wedge effect that prevents the bolt or nut from rotating loose. As a result, the clamp load is maintained, and the joint remains securely fastened.

Key Features and Benefits

• Maintains clamp load: Ideal for high-vibration and load applications, ensuring the security of joints.
• Heavy duty, self-locking design: Suited for use with bolts up to Class 12.9 or Grade 8.
• Various sizes: Available in sizes ranging from #8 (M4) to 1 3/8” (M36) in stock, ready for immediate shipment.
• Material options: Choose from SCM435 Alloy Steel, 316L Stainless Steel, and 254 SMO Stainless Steel, depending on your requirements.
• Preassembled pairs: TEC Series washers come in preassembled glued pairs for added convenience.
• Easy installation and removal: Can be easily installed and removed with standard tools, without the need for retightening.
• Reusable: TEC Series washers will not distort threads on the bolt, making them a cost-effective choice.
• Vibration-proof: Conforms to MIL-STD-1312-7/NASM-1312-7 standards.
• Lubrication-friendly: Lubrication does not impair the locking function of the washer.
• Suitable for short clamp length joints: Can be reliably used for joints with short clamp length.
•  Secures joints with high and low preloads: Versatile and dependable for a wide range of applications.

• Patented heavy-duty, self-locking designs

• Can be used with bolts up to Class 10.9, Grade 8

• One-piece assembly

• No washer required

• Coated in RoHs-compliant GEOMET® 321 or Magni® 565*, providing protection of 720 hours in salt spray testing

• Easy to install with standard tools

• Easy to remove and reusable

• Custom sizes available

• No re-tightening needed once installed

• Vibration-proof according to MIL-STD-1312-7

How Locking Nut Technology Works

Disc-Lock Nuts are two and three-piece nuts that utilize the same cam wedge locking technology: when the joint is subjected to heavy shock or vibration, the interlocking cams create a wedge effect because the cam angles are greater than the thread pitch, securing the joint.