AtlasIED HX21-B Screw

Optimize control panels and audio attenuators with the AtlasIED HX21-B skirted knob screw — engineered for reliable, repeatable control in security, surveillance, and monitoring environments. This AtlasIED screw-style skirted knob delivers a clean, ergonomic interface that improves operator accuracy and reduces incidental adjustments. The HX21-B features a 1-1/4-inch diameter and fits standard 1/4-inch shafts, making it an ideal retrofit for HX41-50 and HX12-R switches and similar controls. Finished in matte black, the skirted profile conceals mounting hardware for a tidy, tamper-resistant appearance suited to public and secured installations. Each knob includes a set screw for secure, wobble-free attachment, minimizing service calls and keeping systems online. NDAA-compliant and backed by a 60-month limited warranty, the HX21-B is built for long-term use in commercial AV, security, and networking racks. Upgrade your control surfaces with a simple, cost-effective component that enhances usability across surveillance and monitoring systems. Add the AtlasIED HX21-B to your next equipment order or contact sales for bulk procurement and installation guidance.

• Instant tactile control upgrade for switches and attenuators, improving operator precision and system responsiveness
• Universal retrofit design fits 1/4-inch shafts and works seamlessly with HX41-50 and HX12-R switches for fast installation
• Durable black skirted design resists wear and hides mounting hardware for a clean, professional panel appearance
• Includes set screw for secure, wobble-free mounting—reduces maintenance and downtime in critical security or AV systems
• Backed by a 60-month limited warranty and NDAA compliance for dependable performance in surveillance, monitoring, and commercial deployments