Medeco Maxum Residential Sing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$315.00
$202.78

Medeco Maxum Residential Single Cylinder Deadbolt, Biaxial, G3 Keyway

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Model: MED-11R503W-05-G3P
$315.00
$202.78
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$315.00
$202.78
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Medeco® 4 Maxum® Residential Deadbolt – High-Security UL 437 Certified

The Medeco 4 Maxum deadbolt sets the benchmark for residential security, combining physical durability with advanced key control technology. Engineered with hardened steel inserts and rotating pins, this Medeco deadbolt resists picking and drilling in compliance with UL 437 standards.

Whether you're securing a home, apartment, or rental property, the Medeco Maxum deadbolt is the ultimate solution for protecting against bumping, wrenching, kicking, and other physical attacks. Its solid 1" hardened steel bolt is housed in heavy-gauge steel, making it one of the most robust deadbolts in the industry.


Unmatched Key Control & Anti-Tampering Technology

  • Medeco 4 utility patent protects against unauthorized key duplication.

  • Sidebar technology ensures the key must be elevated, rotated, and aligned before the lock will operate—offering protection from both picking and bumping.

  • Protection from 3D printing via a unique movable element in the key design.

  • Special angle-cut keys available only to authorized Medeco providers.


Security Features

  • Solid brass construction and strategically placed drill pins provide maximum drill resistance.

  • Heavy-duty steel shroud protects against “ice pick” attacks.

  • Reinforced strike plate with 2” anchor screws resists forced entry via kick-ins.

  • Engineered to withstand crowbar attacks, wrenching, and brute-force impacts.


Certifications & Technical Specs

  • ANSI/BHMA A156.36 Grade 1 Certified

  • UL 437 listed for pick and drill resistance

  • Fits doors 1-3/8” to 2-1/2” thick

  • Standard 2-1/8” crossbore and 1” edge bore (ANSI A115.13 prep)

  • Can be master keyed into systems including Medeco M4, M4 BiLevel*, and M4 CLIQ**


Finishes Available

05 – Bright Brass
06 – Satin Brass
09 – Antique Brass
10 – Satin Brass Blackened
11 – Bright Bronze
12 – Satin Bronze
13 – Oil Rubbed Bronze
18 – Bright Nickel
19 – Satin Nickel
20 – Antique Nickel
22 – Black
24 – Dark Bronze
25 – Bright Chrome
26 – Satin Chrome


Ideal Applications

Perfect for residential environments requiring a Grade 1 high-security medeco deadbolt, including:

  • Homes and condos

  • Rental properties and apartment complexes

  • High-value residential installations

 

Downloads:

Manufacturer Resources

Product Specs

Category:
Mechanical Locks
Product Group:
Mechanical Locks
Series:
Maxum Series
Subcategory:
Deadbolts
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Keyways:
G3 Keyway
Commercial/Residential:
Residential
Keyed:
Yes
Grade:
Grade 1
Duty Level:
Heavy Duty
Technology:
Biaxial
Keyed Function:
Single Cylinder
Lock Function:
Deadbolt
Tags:
medeco 4 maxum deadbolt, medeco deadbolt
Product Model:
11R50W
Product Function:
Cylinder x Thumbturn

Medeco MED-11R503W-05-G3P – Frequently Asked Questions

1) What door types work with the Medeco Maxum residential deadbolt?
Standard residential wood and metal doors from 1-3/8" to 1-3/4" thick. Verify door weight capacity with manufacturer specs. Not recommended for oversized or commercial-grade doors.
2) How does the Biaxial G3 keyway differ from standard keyways?
The Biaxial G3 keyway provides enhanced pick resistance through angled cuts and dual-axis key engagement. Keys cannot be duplicated without proper authorization. Offers superior security over conventional pin tumbler systems.
3) Is this deadbolt handed or reversible?
Single cylinder deadbolts are typically reversible for left or right-hand doors. Check installation template for proper orientation. Thumb turn operates from interior side regardless of door swing.
4) What finish options are available for the Maxum series?
Common finishes include satin chrome, polished brass, antique brass, and oil-rubbed bronze. Verify specific finish availability for this model. Medeco products offer durable protective coatings.
5) What security grade does this deadbolt meet?
Medeco Maxum deadbolts typically meet ANSI Grade 1 or Grade 2 standards. The Biaxial G3 keyway provides high-security cylinder protection. Check product specifications for exact ANSI/BHMA grade rating.
6) Can I rekey this deadbolt to match existing Medeco keys?
Yes, if your existing keys use compatible Medeco keyways. Requires authorized locksmith with proper Medeco tools and blanks. G3 Biaxial keys work within the same system family.
7) What accessories come with the Maxum deadbolt?
Standard package includes deadbolt assembly, strike plate, mounting screws, and installation template. Keys are typically included. Check product listing for complete contents. Additional strike plates sold separately.
8) What are the installation hole requirements?
Standard 2-1/8" cross bore and 1" edge bore. Backset is typically 2-3/8" or 2-3/4". Use manufacturer template for precise measurements. Existing deadbolt prep usually works without modification.
9) How do I maintain the Biaxial G3 cylinder?
Use graphite lubricant only - never oil-based products. Insert key fully and turn smoothly. Clean exterior with mild soap solution. Avoid forcing keys or over-turning mechanism.
10) Are there matching handlesets available?
Medeco offers coordinating residential hardware in matching finishes. Look for Maxum series entry sets and handlesets. Door hardware sections show compatible options.
11) Will this work in extreme weather conditions?
Medeco residential deadbolts handle normal weather exposure. In coastal or harsh environments, choose corrosion-resistant finishes. Ensure proper door fit to prevent water infiltration around cylinder.
How fast can I get the Medeco MED-11R503W-05-G3P delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Medeco MED-11R503W-05-G3P come with a warranty?
Absolutely. The Medeco MED-11R503W-05-G3P is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Medeco MED-11R503W-05-G3P?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Medeco MED-11R503W-05-G3P from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

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