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Polished brass mortise entry lockset with screwless knobs and wide faceplate

Tuff Stuff

Tuff Stuff 5700AL Mortise Entry Door Lock Polished Brass Left Hand 2-3/4" Backset

SKU CH-4QR6-Q5JPS MPN 5700AL

A heavy-duty mortise entry lockset with through-bolted solid brass plates, screwless knobs, self-adjusting spindles, scissor and anti-friction latches, and a 2-3/4" backset

  • Security gradeHeavy Duty
  • Location typeCommercial/Institutional/Industrial/Residential
  • Backset distance2-3/4 in
  • Lock keyingKeyed Different
  • Main functionEntrance
  • Surface finishPolished Brass
  • Heavy-duty security with solid brass construction
  • 2-3/4" backset fits standard commercial door prep
  • Through-bolted screwless knobs ensure firm alignment
  • Self-adjusting spindles simplify installation on thick doors
  • Solid brass cylinder includes two keys

Mortise Entry Lockset for Heavy-Duty Use

The Tuff Stuff 5700AL is a mortise entry lockset built for commercial, institutional, industrial and residential doors. It operates with a 2-3/4" backset and a 1-1/4" x 8" wide faceplate. The unit is supplied new with a polished brass finish and a left-hand orientation.

Through-Bolted Screwless Knobs and Dual Latch System

Through-bolted mounting secures the solid brass plates directly through the door for a rigid fit. Screwless knobs use self-adjusting spindles to remove visible fasteners and simplify alignment. The latch combines a scissor latch with an anti-friction latch for smooth retraction.

Solid Brass Cylinder with Two Keys and Thumb Turn

A solid brass cylinder on the exterior accepts the two included keys, while a thumb turn operates the deadbolt from the interior. The apartment function integrates the bolt, latch and rocker in one mechanism. Buyers needing a right-hand configuration or a different backset dimension should verify compatibility before ordering.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $102.99
Pricier than about 66% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameEm-D-Kay
Product lineLike Marks New Yorker 7NY10A/3
Model name5700AL
Product typeMortise Entry Lockset - Through-Bolted Screwless Knobs with 1-1/4 in x 8 in Wide Face Plate
Design styleKnobs
Size & build
Surface finishPolished Brass
Main materialBrass
Backset distance2-3/4 in
More details
Security gradeHeavy Duty
Location typeCommercial/Institutional/Industrial/Residential
Lock keyingKeyed Different
Main functionEntrance

Questions about this item

How often should the scissor latch and anti-friction latch be lubricated in this mortise lockset?

Periodic light lubrication of the scissor latch and anti-friction latch is recommended to maintain smooth operation in commercial or residential use.

Which component reaches its limit first during continuous operation of this heavy-duty entrance lock?

The solid brass cylinder and through-bolted screwless knobs with self-adjusting spindles are built for sustained commercial and institutional duty cycles.

How much heat or noise does this mortise entry lock generate when the door is used all day?

Mechanical mortise locksets produce negligible heat and only the normal sound of the latch and deadbolt engaging during each opening and closing cycle.

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