Mottura 50.557 Three-point mortise lock – Reversible latchbolt – 150 mm backset

• The Mottura 50.557 is a high-security three-point mortise lock featuring a reversible latchbolt Ø18 mm (right/left) operated by the key and the 8 mm square spindle.
• It includes 2 round bolts Ø18 mm spaced at 50 mm, providing a secure and reliable locking system.
• Designed for Mottura armored doors, its 150 mm handle backset ensures perfect compatibility.
• The key length should be chosen carefully:

• 40 mm: standard length
• 50 / 60 / 85 mm: select according to door thickness

Accessories not included: faceplate, strike plates, rods, and trims (to be ordered separately).
See complementary accessories above.

• Technical specifications

• Type: Three-point mortise lock with reversible latchbolt
• Latchbolt: Ø18 mm, reversible right/left
• Round bolts: 2 bolts Ø18 mm
• Bolt spacing: 50 mm
• Handle backset: 150 mm
• Backset: 63 mm
• Bolt throw: 40 mm
• Rod travel: 17 mm
• Finish: zinc-plated steel
• Handing: right / left reversible
• Use: armored doors

• Supplied with:

• 3 keys with 40 mm stem – brass finish
• Internal escutcheon – brass finish
• External escutcheon – brass finish

• Optional accessories:

• Keys with 50 mm, 60 mm, 85 mm stems (to match door thickness)
• Internal and external guide bushings