• D880 Dorma Thumbturn x Blank Plate Grade 1 Dead Bolt

*Actual product and finish may vary

The Dorma D880 Thumbturn x Blank Plate Turn Grade 1 Deadbolt is operated by turn inside.  Blank plate on the other side.  Bolt automatically deadlocks when fully thrown.

DORMA’s D800 Series Heavy Duty dead bolts provide increased security, reliability, and durability.

DORMA offers a choice of rugged dead bolts to provide an added level of protection. The D800 Series are Grade 1 dead bolts available in both 2-3/8" and 2-3/4" (standard) backsets. The large dead bolt is made from stainless steel for strength and corrosion resistance. A heavy duty brass cylinder in a hardened steel housing surrounded by a heavy steel spin ring complete the security package in the door. This is coupled with a solid steel strike for use in a hollow metal frame and an additional reinforcing plate with 3" screws for wood jamb installations. All of these features provide an exceptionally strong and secure dead bolt.

Dorma D800 Series catalog

Recommended Applications

• Schools and Universities

• Hotels

• Apartments

• Hospitals and Nursing Homes

• Churches

• Municipal Buildings

• Airports

• Retail Complexes

• Offices

• Warehouses

Technical Details:

-D800 Grade 1 Tubular Auxiliary Dead Bolt.

-Heavy Duty brass cylinder in a hardened steel housing.

-Dead bolt front manufactured from stainless steel.

-Solid steel strike.

-1” throw dead bolt.

-Solid steel reinforced strike plate with 3” screws for wood jamb installations.


The DORMA D800 is certified to the requirements of ANSI/BHMA A156.5 Grade 1.

The DORMA D800 is U.L/C.U.L. listed for use on 3-hour rated fire doors.

Cylinders and Keying:

• Unless otherwise specified, cylinders will be provided in DORMA standard keyway with two (2) nickel silver keys.

• Optional patented key system available.

• Refer to DORMA Price List for full details and options such as master keying, retrofit cylinders and keyways, and small format interchangeable cores.


Ten (10) year limited warranty.


D880 Dorma Thumbturn x Blank Plate Grade 1 Dead Bolt

  • Brand: Dorma
  • Product Code: D880
  • $77.00

Available Options