Mottura 50.558 Three-point mortise lock – Without latchbolt – 3 round bolts Ø18 mm

• Mottura 50.558 three-point mortise lock without latchbolt, equipped with 3 round bolts Ø18 mm (centre distance 50 mm).
• Supplied with 3 brass 40 mm stem keys and internal/external escutcheons.
• Select the key length according to your door thickness.
• Accessories not included, see complementary items below.

• The Mottura 50.558 is a high-security three-point mortise lock designed for key-only operation, without handle spindle.
• It features 3 round bolts Ø18 mm spaced at 50 mm, providing a precise and solid locking mechanism.
• Ideal for Mottura armored doors requiring a latchless system.
• The key length must be selected carefully:

• 40 mm: standard length
• 50 / 60 / 85 mm: choose 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 without latchbolt
• Round bolts: 3 bolts Ø18 mm
• Bolt spacing: 50 mm
• Backset: 63 mm
• Bolt throw: 40 mm
• Rod travel: 17 mm
• Operation: key only
• 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
• Service key (ref. to be created)
• “Y-Type” key (ref. to be created)