Schlage 10-078 Flat Square Cor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$41.71
Schlage 10-078 Flat Square Corner Strike Plate with Plastic Box, 4-7/8" x 1-1/4", For L400 Series

Schlage 10-078 Flat Square Corner Strike Plate with Plastic Box, 4-7/8" x 1-1/4", For L400 Series

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Model: 10-078 626

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

$41.71
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Schlage 10-078 Flat Square Corner Strike Plate with Plastic Box, 4-7/8" x 1-1/4", For L400 Series

The Schlage 10-078 is a flat square corner strike plate with plastic box measuring 4-7/8" x 1-1/4", engineered specifically for use with Schlage L400 Series mortise locksets. Designed as a commercial-grade replacement part, this strike plate provides a precise, secure latch pocket interface for proper door latch engagement. The included plastic box backing helps protect the door frame cavity and ensures consistent alignment and performance in demanding commercial applications.

Key Features

  • Precise Dimensions: Measures 4-7/8" x 1-1/4" for accurate fit and professional installation on compatible door frames.
  • Flat Square Corner Design: Square corner profile provides a clean, flush appearance suited to commercial door frame preparations.
  • Plastic Box Included: Integrated plastic box backing protects the door frame cavity and supports consistent latch alignment during operation.
  • L400 Series Compatibility: Engineered specifically for use with Schlage L400 Series mortise locksets, ensuring proper latch engagement and secure operation.
  • Commercial-Grade Replacement Part: Manufactured as an OEM Schlage replacement component, maintaining original performance specifications for the L400 Series.
  • Door Hardware Integration: Classified under Schlage Parts, making it a reliable source-matched accessory for maintenance and replacement projects.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Strike Plates
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 10-078
  • Features: Schlage Parts

Typical Applications

  • Commercial Office Buildings with Schlage L400 Series Mortise Locksets
  • Educational Facilities Requiring Mortise Lock Replacement Parts
  • Healthcare Institutions Maintaining Schlage L400 Series Hardware
  • Government and Municipal Buildings with Established Schlage Installations
  • Retail Establishments Servicing Existing Commercial Door Hardware
  • Multi-Tenant Residential and Mixed-Use Properties with Commercial Locking Systems
  • Industrial and Warehouse Facilities Performing Door Hardware Maintenance

Why Schlage 10-078?

The Schlage 10-078 strike plate is a purpose-built OEM replacement component designed to maintain the integrity and performance of Schlage L400 Series mortise locksets in commercial environments. With exact 4-7/8" x 1-1/4" dimensions and a flat square corner profile, this part ensures proper latch engagement and a professional installation result. Specifying genuine Schlage replacement parts helps preserve the original design intent and long-term reliability of the installed hardware system.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Strike Plates
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
10-078
Features:
Schlage Parts

Schlage 10-078 626 – Frequently Asked Questions

1) Will the Schlage 10-078 strike plate work with an L9000 mortise lock, or only the L400 Series?
The 10-078 flat square corner strike is built for Schlage L400 Series mortise locksets. That is the only lock family it is matched to. If the door carries a different Schlage mortise line, order the strike listed for that series rather than assuming the 4-7/8 x 1-1/4 inch face and box will line up with the existing frame prep.
2) What size is the Schlage 10-078 strike face, and will it cover the existing cutout in my frame?
The face measures 4-7/8 by 1-1/4 inches, which is the standard mortise lock strike footprint on commercial hollow metal frames. If the frame was originally prepped for a Schlage L400 mortise lock, it drops straight into the same mortise. Frames prepped for a cylindrical lock use a much shorter strike and will need the opening lengthened.
3) Does the Schlage 10-078 come with a strike box or do I have to buy that separately?
The plastic box is included with the 10-078. You get the strike plate and the box backing together, so there is nothing else to source to finish the latch pocket. The box closes off the frame cavity and keeps the latch landing in the same place every cycle.
4) Is the 10-078 square corner or radius corner, and does it matter?
Square corner, flat face. It matters a great deal: a frame mortised for square corners will show gaps at the corners if you fit a radius strike, and a radius prep leaves uncut metal at the corners that a square plate will not sit flat against. Check the corners of the strike currently in the frame before ordering.
5) Is the Deltana SP2753 strike plate a substitute for the Schlage 10-078 on a mortise lockset?
No. The Schlage 10-078 is a 4-7/8 inch by 1-1/4 inch flat square corner strike with a plastic box, sized for Schlage L400 Series mortise locksets. The Deltana SP2753 is a 2-3/4 inch by 1-1/4 inch steel strike plate for a deadbolt, so it is both a different length and a different function. A mortise lock frame prep cut for the 4-7/8 inch plate would leave the shorter Deltana plate short of the mortise cutout.
6) Can I use a Codelocks ASA strike plate in place of the Schlage 10-078?
They are different standards. The Codelocks ASA strike plate follows the ASA strike pattern and comes in a stainless steel finish only. The Schlage 10-078 is cut to the Schlage L400 Series mortise pattern at 4-7/8 inch by 1-1/4 inch with a square corner and includes a plastic box, and it is offered in seven finishes including 605 bright brass, 626 satin chrome and 630 satin stainless steel. If the frame is already prepped for the L400 strike, stay with the 10-078; if you are matching an ASA-prepped frame, the Codelocks plate is the one cut for it.
7) What finishes does the Schlage 10-078 strike plate come in so it matches the rest of my lockset?
Seven finishes: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 625 bright chrome, 626 satin chrome, and 630 satin stainless steel. Match the number stamped or specified on the lockset rather than matching by eye, since 626 satin chrome and 630 satin stainless read very similarly in the frame but are not the same finish.
8) Can I use the Schlage 10-078 as a deadbolt strike?
No. The 10-078 is a mortise lockset strike for the Schlage L400 Series, not a deadbolt strike. For a standalone deadbolt you want a part built for that function, such as the Deltana SP2753 deadbolt strike at 2-3/4 by 1-1/4 inches or the Emtek 83223 square corner deadbolt strike.
9) My latch is rubbing and not fully throwing into the strike. Will swapping in a 10-078 fix that?
Only if the existing strike is damaged, wrong for the lock, or misaligned in the mortise. The 10-078 is a fixed, non-adjustable strike sized at 4-7/8 by 1-1/4 inches, so it lands the latch where the L400 prep puts it and nowhere else. If the real problem is a sagging door or a frame that moved, you need to correct the alignment or use an adjustable strike such as the Kwikset 80318 full round adjustable or the 81825 six way adjustable deadlatch on openings where those fit.
10) What is the difference between the Schlage 10-078 and an ASA strike?
They are different frame preps. The 10-078 is the Schlage L400 strike at 4-7/8 by 1-1/4 inches with a plastic box. An ASA strike, such as the Codelocks ASA strike plate in stainless, follows the ASA cutout pattern used by a lot of tubular and electronic locks. One will not substitute for the other without recutting the frame.
11) What is the difference between the Schlage 10-078 and the Emtek 83223 square corner strike plate?
Both use a square corner profile, but they serve different locks. The Schlage 10-078 is a commercial replacement strike for Schlage L400 Series mortise locksets at 4-7/8 inch by 1-1/4 inch with a plastic box behind it. The Emtek 83223 is a standard deadbolt strike plate with square corners, so it addresses a bored deadbolt bolt rather than a mortise latch and auxiliary bolt.
12) I only need the dust box behind an existing strike plate - is there an option instead of the full Schlage 10-078?
The Schlage 10-078 ships as the strike plate with its plastic box together as one OEM assembly for L400 Series mortise locks. If you only need box material, the Kwikset 81231-001 is a metal strike dust box and the Kwikset 81640 is a strike box, both sold as box components. Those are residential-pattern deadbolt strike boxes, so confirm the pocket depth and opening match your mortise frame prep before using either behind a mortise lock.
13) My frame alignment is off - would an adjustable strike work better than the Schlage 10-078?
The Schlage 10-078 is a fixed flat plate; alignment is corrected at the frame, not at the plate. For openings where the strike itself needs to move, the Kwikset 80318 is a full round adjustable strike and the Kwikset 81825 is a 6 way adjustable deadlatch. Both are deadbolt strike plate function parts on bored-lock patterns, so they are not a drop-in for an L400 mortise prep - they are the path when you are working a bored latch opening instead.
14) Is the Schlage 10-078 a genuine OEM part or an aftermarket copy?
It is the Schlage factory replacement part, model 10-078, for the L400 Series. For a property manager standardizing a building already running Schlage mortise hardware, that matters: the latch keep and box depth are the ones the lock was designed against, so latch engagement stays as originally specified.
15) Is this strike plate rated for commercial door traffic or is it a residential part?
Commercial. The 10-078 is a replacement part for commercial mortise hardware and is used in offices, schools, healthcare, and government buildings running Schlage L400 locksets. Residential strikes from lines like Kwikset (the 81640 strike box, for example) serve a different class of lock entirely.
16) Can I order the 10-078 in quantity to standardize strikes across a building?
Yes, and it is a common MRO buy. The 10-078 is sold by finish, so a facility running Schlage L400 mortise locks in 626 satin chrome can stock one finish across every opening. Pick the finish code off an existing lockset and order that single code for the whole building.
17) For a commercial building standardizing strike plates, how does the Schlage 10-078 compare to the Kwikset strike options?
The Schlage 10-078 is specified as a commercial replacement part for Schlage L400 Series mortise locksets and comes in seven architectural finishes, including 612 satin bronze, 625 bright chrome and 626 satin chrome, which lets you match existing trim across a facility. The Kwikset strike parts in the same category - the 80318 full round adjustable strike, the 81825 6 way adjustable deadlatch, the 81640 strike box and the 81231-001 metal strike dust box - are all deadbolt strike plate function parts, suited to bored deadbolt openings rather than mortise-prepped commercial frames.
How fast can I get the Schlage 10-078 626 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 Schlage 10-078 626 come with a warranty?
Absolutely. The Schlage 10-078 626 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 Schlage 10-078 626?
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
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