Falcon D251 Grade 2 Double Thu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$80.00
$33.37
Falcon Falcon D251 Double Thumbturn Function - Grade 2 Medium-duty Deadbolt Locks FAL-D251

Falcon D251 Grade 2 Double Thumbturn Deadbolt with Anti-Saw Protection

(5 reviews) Write a Review

Model: D251 626
$80.00
$33.37
Selected Finish is

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

$80.00
$33.37
Adding to cart… The item has been added
Free Shipping on orders over $99
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Falcon D251 Grade 2 Double Thumbturn Deadbolt with Anti-Saw Protection

Professional Medium-Duty Security Solution

The Falcon D251 double thumbturn deadbolt delivers Grade 2 certified security with solid zinc bolt construction and hardened steel anti-saw pin insert. Featuring adjustable 2-3/8" or 2-3/4" backset with lock-in-place helix design, this medium-duty deadbolt accommodates door thicknesses from 1-3/8" to 2-1/4" and includes metal dustbox reinforcement with three 3" screws for enhanced frame protection.

Professional Features & Benefits

  • Adjustable Backset: 2-3/8" or 2-3/4" with lock-in-place helix design for versatile installation requirements.
  • Door Thickness Range: Accommodates 1-3/8" to 2-1/4" doors for broad compatibility across commercial applications.
  • Anti-Saw Protection: Solid zinc bolt with hardened steel anti-saw pin insert provides enhanced security against forced entry attempts.
  • Reinforced Frame Protection: Metal dustbox anchors deep into wood door frames with three 3" screws to protect against kick-in attacks.
  • Tamper-Resistant Design: Free-spinning tapered trim ring resists wrenching and prying, while integrated security shield protects bolt from ice-pick attacks.
  • Grade 2 Certification: ANSI/BHMA A156.5 Grade 2 certified for medium-duty commercial applications with reliable performance standards.
  • ADA Compliant Operation: Thumbturn design meets ADA compliance requirements for accessible operation.
  • Fire Rating Available: UL 10C 3-hour fire rated options available when used as auxiliary locks for code compliance applications.

Technical Specifications

  • ANSI/BHMA: A156.5, 2001, Grade 2
  • Commercial/Residential: Commercial
  • Cylinder and Keyways: n/a
  • Department: Door Hardware
  • Duty Level: Medium Duty
  • Electronic: No
  • Grade: Grade 2
  • Keyed: No
  • Keyed Function: Non-Keyed
  • Lock Function: Double Thumbturn
  • Product Attribute: Deadbolts
  • Product Category: Mechanical Locks
  • Product Function: Double Thumbturn
  • Product Group: Mechanical Locks
  • Product Model: D251
  • Product Subgroup: Bored Locksets
  • Product Type: Deadbolts
  • Series: D200 Series
  • Standard Strike: Square Corner with metal dust box, 1-1/8" x 2-3/4"
  • Subcategory: Deadbolts

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness between 1-3/8" and 2-1/4", and backset selection of 2-3/8" or 2-3/4".
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 1" housing diameter deadbolt.
  3. Prepare door and frame by drilling required holes including the 1-1/8" x 2-1/4" faceplate mortise and routing as specified in manufacturer instructions.
  4. Install the metal dustbox reinforcement in the frame with three 3" screws, then mount the deadbolt assembly and strike plate per manufacturer specifications.
  5. Adjust the lock-in-place helix backset mechanism for proper alignment and verify smooth thumbturn operation on both sides.
  6. Test deadbolt operation to verify proper 1" throw extension and retraction, and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Falcon Quality?

Falcon D251 deadbolts deliver professional-grade reliability with solid zinc bolt construction and hardened steel anti-saw pin insert rated for Grade 2 commercial applications. The integrated security features including metal dustbox reinforcement and tamper-resistant trim design provide enhanced protection against common attack methods. BAA compliant construction and available UL 10C fire rating options ensure code compliance for demanding commercial installations where dependable security performance is essential.

Product Specs

Series:
D200 Series
Subcategory:
Deadbolts
Grade:
Grade 2
Duty Level:
Medium Duty
Keyed:
No
Standard Strike:
Square Corner with metal dust box, 1-1/8" x 2-3/4"
ANSI/BHMA:
A156.5, 2001, Grade 2
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Deadbolts
Electronic:
No
Keyed Function:
Non-Keyed
Commercial/Residential:
Commercial
Cylinder and Keyways:
n/a
Lock Function:
Double Thumbturn
Product Attribute:
Deadbolts
Product Model:
D251
Product Function:
Double Thumbturn
Product Category:
Mechanical Locks
Department:
Door Hardware

Falcon D251 626 – Frequently Asked Questions

1) What is the Falcon D251 double thumbturn function?
Double thumbturn means both sides have thumbturns for key-free operation from inside. Ideal for storage rooms, utility areas, or spaces requiring quick egress without keys.
2) What door thickness does the D251 accommodate?
Standard model fits 1-3/8" to 1-3/4" door thickness. Check manufacturer template for exact measurements and verify your door thickness before installation.
3) Is this deadbolt Grade 2 certified?
Yes, Grade 2 medium duty rating meets commercial building codes. Suitable for moderate traffic interior applications and light commercial use.
4) Does the D251 require handing specification?
No handing required. Double thumbturn function works on both left and right-hand doors. Universal design simplifies ordering and installation.
5) What finishes are available for this deadbolt?
Common finishes include satin chrome, bright brass, and oil-rubbed bronze. Contact us to confirm current finish availability for your project.
6) Can this deadbolt be used on fire-rated doors?
Verify fire rating compatibility with local codes. Some jurisdictions require specific listings for fire-rated assemblies. Check with AHJ before specifying.
7) What backset does the D251 use?
Standard 2-3/8" backset is most common. Some models offer adjustable 2-3/8" or 2-3/4" backset. Confirm backset measurement from door edge to center of bore.
8) Does installation require special tools?
Standard installation uses hole saw, spade bits, and basic hand tools. Follow manufacturer template for precise hole placement and alignment.
9) How do you maintain the thumbturn mechanism?
Lubricate thumbturns annually with graphite spray. Avoid oil-based lubricants that attract dirt. Clean exterior with mild soap and dry thoroughly.
10) Are there keyed versions of this deadbolt?
Yes, Falcon offers keyed deadbolt functions in the same series. Browse our door hardware section for keyed cylinder options.
11) What strike plate comes with the D251?
Includes standard strike plate and mounting hardware. Heavy-duty or adjustable strikes available separately for problem frames or security upgrades.
How fast can I get the Falcon D251 626 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 Falcon D251 626 come with a warranty?
Absolutely. The Falcon D251 626 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 Falcon D251 626?
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 Falcon D251 626 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.

Product Reviews

  • 4
    Secure and Easy Deadbolt Locks!

    Posted by Emma on Jul 24th 2023

    These Falcon D251 Double Thumbturn Deadbolt Locks are a winner! Love the double thumbturn function - quick and easy locking from inside and out. Provides top-notch security for my home. Only thing is, the finish options could be more varied, but the quality's spot on!

  • 5
    A Game Changer for Home Security

    Posted by Stephen on Aug 16th 2023

    I just snagged the Falcon D251 Double Thumbturn Deadbolt from zensupply.com and I'm feeling pretty good about it. The double thumbturn feature is a nifty addition – super easy to lock and unlock, especially when my hands are full. On the flip side, the installation instructions left me scratching my head a bit, and it took more time than expected to get it set up. Once it's up and running though, it's been a solid upgrade for my home security.

  • 5
    Double the Convenience, Double the Security

    Posted by Mia on Aug 8th 2023

    Just snagged the Falcon D251 Double Thumbturn Deadbolt and I'm vibing with it. Love the double thumbturn action - means I can lock and unlock from inside without a key. Solid build, but installing got a bit tricky. Overall, thumbs up for added security and chill style.

  • 5
    Solid Security Solution for Peace of Mind

    Posted by Emily on Jul 10th 2023

    Hey, I'm Emily, and I recently purchased the Falcon D251 Double Thumbturn Function Grade 2 Medium Duty Deadbolt Locks from ZenSupply. One feature I absolutely love about this product is its strong and reliable build, providing excellent security for my doors. However, it's worth noting that the double thumbturn may not be suitable for individuals with limited hand mobility. Overall, if you're seeking a sturdy deadbolt that ensures peace of mind, the Falcon D251 is a fantastic choice.

  • 5
    Reliable Deadbolt for Everyday Security

    Posted by William on Jul 7th 2023

    Hey, I'm William, and I recently purchased the Falcon D251 Double Thumbturn Function Grade 2 Medium Duty Deadbolt Locks from ZenSupply. One thing I really like about this product is its sturdy construction, ensuring reliable security for my doors. However, it's worth noting that the double thumbturn feature may be a bit bulky for some door configurations. Overall, if you're looking for a durable and dependable deadbolt for your home or office, the Falcon D251 is a solid choice.

!