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The Cal Royal UL831 Exposed Screw UL Surface Bolt is a heavy-duty, UL-listed door bolt designed for enhanced security and reliable performance in commercial and residential settings. Featuring exposed screw mounting for easy installation and a secure hold, this surface bolt is ideal for top or bottom door applications where added reinforcement is needed. Its robust construction ensures long-lasting durability, while the UL listing guarantees compliance with safety and fire standards. Perfect for securing inactive doors or double door setups, the Cal Royal UL831 offers dependable protection and straightforward functionality for any high-traffic environment.

• Offers tamper-resistant mounting
• Can be used for both in-swinging and out-swinging doors
• Available with both mortise and versal strikes
• Conforms to ANSI / BHMA A156.16, L04161

Dimensions:

Width: ³⁄₄"

Projection: 1 ⁵⁄₁₆"

Bolt Throw: 1”