This 5/16" x 3" one-way screw is engineered for permanent, tamper-resistant applications. Manufactured from industrial-grade steel with a protective black finish, its unique drive system prevents removal once installed. Conforms to common ANSI/ASME dimensional standards. Learn More
This 5/16" x 2" one-way screw is a tamper-resistant fastener made from industrial-grade low carbon steel with a protective black finish. Designed for security applications based on ASTM A307 material standards where removal prevention is critical. Learn More