Lead-Lined Cylindrical Door Locks
Secure. Shield. Comply.
Keep radiation where it belongs—inside your imaging, treatment, or industrial X-ray room. Our lead-lined cylindrical locksets are purpose-built to eliminate radiation leakage at one of the most common weak points in shielded doors: the lock hardware.
✅ Made in the USA
✅ Fast, free shipping (ships in 1–2 business days)
✅ Multiple payment options
✅ Engineered for medical and industrial facilities
Why Lead-Lined Cylindrical Locks Matter
Standard locksets leave gaps around the latch and bore, creating potential radiation leaks. Our lead-lined cylindrical locks seal those gaps internally, providing continuous shielding without sacrificing performance, safety, or code compliance.
Lock Function Options
Available in Grade 1 (ND Series) for high-traffic areas and Grade 2 (ALX Series) for moderate-use environments.
Passage Lock (ND10S / ALX10)
- No locking mechanism
- Inside and outside always unlocked
- Ideal for low-security areas
Hospital Privacy Lock (ND44 / ALX44)
- Push-button locking on the inside
- Emergency unlock from the outside
- Ideal for patient rooms and treatment spaces
Office / Entrance Lock (ND53PD / ALX53)
- Inside push-button locks the outside lever
- Outside unlocks with a key
- Best for staff-only or controlled-access rooms
Classroom Lock (ND70PD / ALX70)
- Inside lever always unlocked for egress safety
- Outside locks and unlocks with a key
- Supports emergency egress compliance
Storeroom Lock (ND80PD / ALX80)
- Inside always unlocked
- Outside requires a key to enter
- Ideal for restricted-access rooms
Key Benefits
- Integrated Radiation Shielding: 1/16" internal lead lining blocks X-rays at the latch and bore
- Code Compliant: Meets ANSI A156.2, ANSI A117.1, FF-H-106C (Series 161), and applicable fire and hurricane standards
- Commercial-Grade Durability: Up to 800,000 cycles (Grade 1) and 400,000 cycles (Grade 2)
- Professional Appearance: Satin chrome finish with Rhodes or Saturn lever styles
- Corrosion Resistant: Zinc-plated chassis and solid brass roses
- High-Security Key System: Schlage 6-pin Everest C123 keyway
Technical Specifications
- Lead Lining: 1/16" standard (custom thickness available)
- Door Thickness Compatibility: Fits doors from 1 ⅝" to 2 ⅛"
- Door Prep: Standard 161 prep with 2 ¾" backset
- Grades Available: Grade 1 (high traffic) and Grade 2 (moderate traffic)
Installation and Ordering Guidelines
- Emergency Egress: All locksets allow immediate exit from the inside
- Custom Lead Thickness: Available to meet project-specific shielding reports
- Shielding Verification: Lead equivalency must be confirmed by a radiation physicist
- Delivery Inspection Required: Inspect all shipments with the delivery driver present
- No Changes After Ordering: Verify all specifications before purchase
Bottom Line
When you’re building a radiation-safe facility, even the smallest hardware opening matters. These lead-lined cylindrical locksets combine trusted Schlage performance with integrated radiation shielding to protect staff, patients, and adjacent spaces, and maintain compliance with an all in one hardware solution.