Arrow Lock HK33-BB-630 Grade 1 Asylum Lock

Arrow HK33-BB-630 Grade 1 Asylum Lock offers a reliable and robust locking solution for institutional settings. Designed as a Grade 1 cylindrical knob lock, it features a durable ball knob and a conventional cylinder, ensuring both security and ease of use. The satin stainless steel finish not only enhances its aesthetic appeal but also provides superior corrosion resistance, making it ideal for high-traffic areas. With a solid brass 6-pin cylinder, the HK33-BB-630 comes with two nickel-plated brass keys and is available in both Arrow AR and Schlage CS keyways. Its non-handed design allows for versatile installation on doors ranging from 1-3/8" to 2" thick. The stainless steel latch has a 1/2" throw and is complemented by a durable strike plate, providing peace of mind in demanding environments. Backed by a 10-year warranty and certified by BHMA Grade 1, this lock is engineered for long-lasting performance. Its 3-hour fire rating ensures it meets the highest safety standards, making it a perfect choice for commercial applications. The Arrow HK33-BB-630 combines functionality with reliability, delivering a worry-free locking solution for any institutional space.

Grade 1 Asylum Lock

Grade 1 Asylum Cylindrical Lock, Ball Knob, Conventional Cylinder, Satin Stainless Steel Finish, Non-handed

The HK series Grade 1 Cylindrical Knob lock is designed and tested for the most robust applications for Grade 1 knob locksets. Backed by the Arrow 10 year warranty and Certified to BHMA Grade 1 it is the worry free solution when a Grade 1 knob lock is needed.

The Arrow HK Series is a Grade 1 Knob Lock that comes in a variety of finishes and functions.

• Lock Chassis – Cold rolled steel with zinc dichromate finish for corrosion resistance. Latch retractor is precision stainless steel. Requires standard 2-1/8" (53.97mm) bore through door.
• Door Thickness – 1-3/8" (35mm) to 2" (50.80mm)
• Latch – Stainless steel with 1/2" (12.7mm) throw. Latch housing is steel, zinc dichromate finish for corrosion resistance. 1" (25.4mm) bore in edge of door required.
• Latch Front – Brass or stainless steel, 2-1/4" (57.15mm) x 1-1/8" (28.57mm), beveled 1/8" (3.17mm) in 2" (50.8mm)
• Handing – Reversible. 
• Strike – Brass or stainless steel. ANSI A115.2,4-7/8" (123.82mm) x 1-1/4" (31.75mm) curved lip standard with a 1-1/4" (31.75mm) lip to center dimension.
• Cylinder, Standard – Solid brass 6 pin cylinder supplied with two 6 pin nickel plated brass keys. Available in Arrow AR or Schlage CS keyway.
• Cylinder Options – Interchangeable core-lockset prepared for use with 6 or 7 pin interchangeable core available. SFIC format. Supplied less core. Suffix "IC" to design.

Resources

• HK Series Cylindrical Lock Cut Sheet
• HK Series Grade 1 Cylindrical Knob Locks Cut Sheet