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Brass Grand Master Key Mortise Cylinder

The Brass Grand Master Key Mortise Cylinder is crafted from durable brass, ensuring longevity and security. Keyed in pairs, it provides a convenient solution for multiple locks. With a standard 1-5/32″ diameter, it fits common mortise locks and latches. Available in 4-pin, 5-pin, and 6-pin configurations, it offers flexibility in security levels. Choose between keyed-alike (KA) pairs or keyed different (KD) options. A Master Keyed System is available as an optional order for enhanced security. Each cylinder comes with 2 keys and is compatible with standard 1-5/32″ diameter mortise cylinders. Available finishes include AL, DU, BK, WH, US26D, and US32D, and lengths range from 1″ to 1-1/2″.

Product Features

Model Number


Minimum Order Quantity

500 pairs





Product Details

  • Brass material & housing
  • Keyed in pairs
  • A standard 1-5/32″ diameter cylinder
  • 4-pin, 5-pin and 6-pin available
  • Available in keyed-alike (KA) pairs, keyed different (KD)
  • Master Keyed System available to be optional order
  • All cylinder furnished with 2 keys per cylinder
  • To operate mortise lock or latch without key
  • Interchanges with standard 1-5/32″ diameter mortise cylinder
  • AL / DU / BK / WH / US26D / US32D finish available
  • 1″, 1-1/8″, 1-1/4″, 1-1/2″ length available


Secutor, Custom Door Lock Manufacturer In Taiwan

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We take pride in offering a comprehensive range of services to meet your security needs. Our expertise ensures that you receive top-quality solutions.

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Color Box Packed Available

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Provide Samples for Reference

Make informed decisions by testing and comparing before committing to a larger order.

Provide Samples for Reference

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Related Products


Yes, we do provide samples at no charge. However, please note that the cost of freight is not covered. Please be aware that some items, such as Door Closers, Panic Exit Devices, and certain specialties, may not be included in this offer.
Our production time ranges from 45 to 90 days, depending on the specific product and order.
Our payment terms are as follows: 30% T/T in advance, with the balance due before shipment or against the copy of the Bill of Lading (B/L).
We offer various price terms to cater to our customers’ preferences: EXW/FOB/C&F/CIF/DAP/DDU. The choice of terms depends on your specific requirements.

Certainly! Our company is located at Rm. A4, 9/f, No. 6, Siwei 3rd Rd., Lingya Dist., Taiwan. We would be delighted to welcome you for a visit. Kindly provide us with a few days’ notice to make the necessary arrangements for your visit.

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