Corbin Russwin 433F77 Grade 1 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$14.17
Corbin Russwin 433F77 - ML2000 M & P Escutcheon Screw Pack

Corbin Russwin 433F77 Grade 1 - ML2000 M & P Escutcheon Screw Pack

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Model: 433F77-626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$14.17
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Corbin Russwin 433F77 ML2000 Series Throughbolt Screw Pack for M & P Escutcheons

Genuine Replacement Throughbolt Packet for ML2000 and ML2000HS Mortise Lock Escutcheons

The Corbin Russwin 433F77 is a genuine OEM throughbolt screw pack designed specifically for use with the ML2000 and ML2000HS Mortise Lock Series. This packet provides the correct fasteners for M and P escutcheon installations on 1-3/4" doors, ensuring a secure and properly fitted assembly. Each pack contains 2 #8-32 Phillips Oval Head Machine Screws, delivering the exact hardware needed for professional-grade mortise lock escutcheon installations in commercial door applications.

Professional Features & Benefits

  • ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
  • UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
  • Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
  • Multi-function capability: 12 functions configurable from one ML2054 lockbody
  • Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
  • 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
  • Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
  • Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
  • Motorized Electric Latch Retraction (MELR) available for ML20900 series
  • Thru-bolted trim designs for proper alignment and increased security
  • Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
  • UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
  • Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

  • Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
  • Handing: Handed; quick reversible — re-handed without disassembling the lock case
  • Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
  • Backset: 2-3/4" (70mm)
  • Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
  • Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
  • Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
  • Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
  • Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
  • Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
  • Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
  • Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
  • Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
  • Warranty: Ten-year mechanical; five-year MELR; two-year electrical

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 Corbin Russwin Quality?

Corbin Russwin parts and accessories are manufactured to exacting standards, ensuring seamless compatibility with the ML2000 and ML2000HS Mortise Lock Series for dependable commercial door hardware performance. Using genuine Corbin Russwin replacement components like the 433F77 Throughbolt Screw Pack guarantees proper fit and function for M and P escutcheon assemblies on 1-3/4" doors. Engineered for demanding commercial applications where precise hardware specifications and long-term reliability are essential.

Product Specs

Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Screw Pack
Commercial/Residential:
Commercial
Subcategory:
Parts and Accessories
Product Attribute:
Parts and Accessories
Product Function:
Screw Pack
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin 433F77-626 – Frequently Asked Questions

1) What exactly comes in the Corbin Russwin 433F77 screw pack?
The 433F77 is a throughbolt packet containing two #8-32 Phillips oval head machine screws. It is the fastener kit only, for mounting M and P escutcheon trim on ML2000 and ML2000HS mortise locks. No escutcheon, lock case, or cylinder is included.
2) Will the 433F77 throughbolt screws work on my door thickness?
Order by door thickness: the 433F77 is offered for 1-3/4 inch doors and for 2-1/4 inch doors. Throughbolt screw length has to match the door, so pick the option that matches the leaf you are working on. 1-3/4 inch is the standard commercial thickness and the one most ML2000 openings use.
3) Do these Corbin Russwin escutcheon screws come in a finish to match my trim?
Eight finishes are offered on the 433F77: 605 bright brass, 612 satin bronze, 613 satin bronze oil-rubbed, 613E dark oxidized satin bronze equivalent, 625 bright chrome, 626 satin chrome, 630 satin stainless steel, and BSP black suede powder coat. Since these are oval head screws that sit visible on the escutcheon face, match the finish to the trim already on the door.
4) Is the 433F77 the right screw pack for sectional trim, or only escutcheon trim?
It is the escutcheon pack. The 433F77 covers M and P escutcheon trim on the ML2000 and ML2000HS series. If the door has sectional (rose and lever) trim rather than a full escutcheon plate, this is not the fastener kit for it.
5) I am restocking mortise lock parts for a building standardized on Corbin Russwin ML2000 locks. Does one screw pack cover every door?
Only if every door is the same thickness and the same trim finish. The 433F77 is ordered by both door thickness (1-3/4 or 2-1/4 inch) and finish, so a mixed building needs more than one line item. Each pack covers one lock, two screws.
6) Why are ML2000 mortise trims through-bolted instead of just screwed to the door face?
Corbin Russwin through-bolts ML2000 trim so the two escutcheons clamp to each other through the door rather than relying on the door face. That keeps the plates aligned and adds pull resistance, which is why replacing a lost or wrong-length screw with a generic machine screw is a bad idea on a Grade 1 opening.
How fast can I get the Corbin Russwin 433F77-626 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 Corbin Russwin 433F77-626 come with a warranty?
Absolutely. The Corbin Russwin 433F77-626 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 Corbin Russwin 433F77-626?
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 Corbin Russwin 433F77-626 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.
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