[1000 BULK] Thread Rolling Screws Unslotted Indented Hex Washer Head Steel Zinc & Waxed Tri-Lobe 5/16-18 X 1-1/2 Taptite Screws Alternative

Experience robust fastening performance with Thread Rolling Screws — unslotted indented hex washer head, tri-lobe drive, in steel with a zinc plated and waxed finish. Size 5/16-18 x 1-1/2. This screw is an effective alternative to Taptite screws, delivering reliable thread-forming action in a wide range of metal assemblies.

Designed for high torque and vibration resistance, these thread-rolling (thread-forming) screws cut their own mating threads as they install, eliminating the need for pre-tapped holes in many applications. The indented hex washer head provides a flush, clean appearance while distributing load evenly across the surface. The tri-lobe drive enhances anti-slip performance and reduces cam-out during installation. The zinc coating offers corrosion resistance, while the waxed finish aids lubrication for smoother driving.

Key Features

• Thread-rolling (thread-forming) design forms strong threads without pre-drilling, increasing efficiency and reducing wear.
• Indented hex washer head (unslotted) provides a flush, low-profile finish and secure driving engagement.
• Tri-Lobe drive enhances anti-slip performance and minimizes cam-out during installation.
• Steel with zinc plating offers corrosion resistance; waxed finish aids lubrication for smoother driving.
• Size: 5/16-18 diameter, 1-1/2" length (coarse 18 TPI).
• Alternative to Taptite screws in compatible assemblies, providing robust performance with a different drive/finish option.

Benefits

• No pre-tapped holes required in many metal-to-metal assemblies, improving installation speed and efficiency.
• High torque and vibration resistance help maintain a secure fit over time.
• Low-profile head and secure drive reduce cam-out and improve driving control.
• Ideal for automotive interiors, appliance enclosures, metal cabinets, and other demanding metal applications.

Applications

• Automotive interiors
• Appliance enclosures
• Metal cabinets
• Other metal-to-metal assemblies requiring a strong, secure thread-forming screw