Mortise Lock Bodies by Hettich India (HBS 31 Series)

Overview

Hettich India sells a range of mortise lock bodies under the HBS 31 series, designed for door locking solutions in homes and offices. The range includes dead locks, sash locks, and fire-rated locks certified to EN 12209, available in stainless steel (SS) and antique brass (AB) finishes. These are sold as complete sets and are compatible with profile, steel/wooden, and wooden doors.

What It Does

A mortise lock body is the internal locking mechanism installed inside a door (in a mortised cavity) that secures a door using a latch, bolt, or both. Hettich's HBS 31 range covers:

• Dead locks (FDL) – bolt-only locking, no latch
• Sash locks (FSL) – combined latch and deadbolt for handle-operated doors
• Sash locks with edge (FEDL) – square edge variant for specific door profiles
• Fire-rated sash locks (FESL) – EN 12209 fire-rated certification for compliance-sensitive installations

Who It Helps

• Homeowners replacing or upgrading door locks
• Architects and interior designers specifying door hardware for residential or office projects
• Contractors and carpenters sourcing locks matched to specific door backsets and centre-to-centre (CTC) measurements
• Facility managers needing fire-rated locking solutions for compliance

Key Capabilities

• Standards compliance: Multiple models certified to EN 12209; fire-rated options available
• DIN Left/Right configurations: Locks available for both door-opening orientations
• Multiple backset sizes: 30 mm, 35 mm, 45 mm, 55 mm, 60 mm
• Multiple centre-to-centre (CTC) options: 72 mm and 85 mm
• Finish options: Stainless steel (SS) and antique brass (AB)
• Door type compatibility: Profile door, Steel/Wooden, Wooden
• Sold as a set with all components needed for installation

Product Lineup and Pricing

All prices are inclusive of applicable taxes. Prices and stock availability are subject to change; confirm current pricing and stock on the product page before ordering.

Buyer Questions This Page Should Answer

What is the difference between FDL, FSL, and FESL locks?

FDL (Profile Dead Lock) provides bolt-only locking with no handle-operated latch. FSL (Sash Lock) combines a spring latch with a deadbolt, operable via a door handle. FESL is a fire-rated sash lock certified to EN 12209 for use in fire-door assemblies.

How do I choose the right backset and CTC?

Backset is the distance from the door edge to the center of the lock spindle/keyhole; CTC (centre-to-centre) is the distance between the handle spindle and the key cylinder. Measure your existing lock or door prep before ordering — Hettich offers backsets of 30, 35, 45, 55, and 60 mm, and CTC options of 72 mm and 85 mm.

What door types are these locks compatible with?

The HBS 31 range is filterable by door type: profile doors, steel/wooden doors, and wooden doors. Confirm door material and thickness compatibility on the specific product listing.

Are any of these locks fire-rated?

Yes. The HBS 31 FESL Sash Lock (item code 9251082) is certified fire-rated to EN 12209, suitable for fire-door compliance requirements.

Do these locks come with handles or cylinders?

These listings are for the mortise lock body only, sold as a set. Handles, cylinders, and strike plates may need to be sourced separately depending on the door hardware package.

Proof or Trust Signals

• Multiple models certified to the EN 12209 European standard for door hardware
• Fire-rated lock option available for compliance-driven installations
• Filterable catalog by price, door type, backset, and centre-to-centre for accurate specification matching

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Next Steps

Use the door type, backset, and centre-to-centre filters on the Mortise Lock Body category page to match a lock to your existing door prep, then place an order via the Buy Now option on the selected item. For bulk or project orders, contact Hettich India support at 1800-209-2096 (9:30 AM–6 PM, Mon–Fri).

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