IS 4992 : 1975Specification for door handles for mortice lock (vertical type)

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BS EN 1906 · DIN 18255 · AS 4145.2

CurrentSpecializedSpecificationBIMArchitectural · Builder Hardware

Link points to Internet Archive / others. Not hosted by InfraLens. Details

IS 4992:1975 is the Indian Standard (BIS) for door handles for mortice lock (vertical type). This standard specifies the requirements for materials, dimensions, manufacture, workmanship, finish, and performance testing for vertical type door handles intended for use with mortice locks. It covers various materials like brass, aluminium, and zinc alloys and their appropriate finishes.

Specification for door handles for mortice lock (vertical type)

Overview

Status: Current
Usage level: Specialized
Domain: Architectural — Builder Hardware
Type: Specification
Amendments: Amendment 1 (August 1980); Amendment 2 (December 1993)

International equivalents

BS EN 1906:2012 · BSI (British Standards Institution), UK DIN 18255:2022-05 · DIN (Deutsches Institut für Normung), Germany AS 4145.2-2008 · Standards Australia, Australia ANSI/BHMA A156.13-2022 · BHMA (Builders Hardware Manufacturers Association) / ANSI, USA

Typically used with

IS 209 IS 292 IS 617 IS 1068 IS 1363 IS 2209

Also on InfraLens for IS 4992

5Key values 1Tables 4FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes

! This code is essential for ensuring interchangeability and quality of door handles from different manufacturers. It was reaffirmed in 2017, indicating its continued relevance in the industry. The choice of material and finish as per the standard should be based on the environmental exposure conditions of the installation site.

Frequently referenced clauses

Cl. 3Materials Cl. 4Manufacture, Workmanship and Finish Cl. 5Dimensions Cl. 7Performance Requirements Cl. 9Marking

Updates & Amendments2 amendments

Amendment 1 (August 1980)

Amendment 2 (December 1993)

Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.

brassaluminium alloyzinc alloymild steel

International Equivalents

Similar International Standards

BS EN 1906:2012BSI (British Standards Institution), UK

MediumCurrent

Building hardware - Lever handles and knob furniture - Requirements and test methods

Covers all types of lever handles, including the vertical type for mortice locks covered by IS 4992.

DIN 18255:2022-05DIN (Deutsches Institut für Normung), Germany

MediumCurrent

Building hardware - Door handle sets, door plates and door rosettes - Terms and definitions, dimensions, requirements and tests

Specifies dimensions, requirements, and tests for door handle sets, closely related to the scope of IS 4992.

AS 4145.2-2008Standards Australia, Australia

LowCurrent

Locksets and hardware for doors and windows - Part 2: Mechanical locksets

Covers the entire mechanical lockset, with handle furniture requirements being a subsection of the standard.

ANSI/BHMA A156.13-2022BHMA (Builders Hardware Manufacturers Association) / ANSI, USA

LowCurrent

Mortise Locks & Latches

Focuses on the performance of the complete mortise lock, including the operational trim (handle), not just the handle itself.

Key Differences

≠IS 4992 is a prescriptive standard, focusing on specific materials and dimensions, whereas modern international standards like EN 1906 are performance-based, using a grading system for durability, corrosion, etc.

≠International standards mandate extensive cyclic endurance testing (e.g., 100,000 to 200,000 cycles in EN 1906), which is absent in IS 4992:1975.

≠IS 4992 specifies plating thickness for corrosion protection. EN 1906 requires performance testing via Neutral Salt Spray (NSS) tests, classifying products into grades (e.g., 24 hours to 480 hours).

≠EN 1906 includes requirements and classifications for use on fire/smoke doors and safety-in-use features, which are not addressed in IS 4992.

≠The static load test in IS 4992 is a simple gravity load (450 N), while EN 1906 specifies more complex torque and axial load tests with higher force values depending on the performance grade.

Key Similarities

≈All standards cover the fundamental purpose of a door handle: to operate a mortice lock or latch mechanism.

≈Both IS 4992 and international standards specify and control the use of common materials like brass, aluminium, and zinc alloys for manufacturing handles.

≈All standards address the interface with the lock, primarily through compatibility with a square drive spindle, even if the exact dimensions vary slightly (e.g., 7.9mm in IS vs 8mm in Europe).

≈Both the IS code and international standards specify minimum strength requirements, although the test methods and values differ significantly. They all aim to prevent handle failure under reasonable force.

≈Dimensional controls for key aspects like fixing centres and lever projection are present in all standards to ensure a degree of interchangeability and basic ergonomics.

Parameter Comparison

Parameter	IS Value	International	Source
Durability (Cyclic Endurance)	Not specified	Grade 6: 100,000 cycles; Grade 7: 200,000 cycles	BS EN 1906:2012
Static Load on Lever	450 N (~45 kgf) applied vertically at the free end. No permanent set allowed.	Tested via torque (e.g., 100 Nm) and axial load (e.g., 1000 N) tests, depending on grade.	BS EN 1906:2012
Corrosion Resistance Test	Prescriptive: e.g., Chromium plating thickness of 0.3 µm over nickel.	Performance: e.g., Grade 3 requires 96 hours Neutral Salt Spray (NSS) test with no base metal corrosion.	BS EN 1906:2012
Spindle Size	To suit a 7.9 mm square spindle.	Typically 8 mm square (most common), but also 7 mm or 9 mm.	DIN 18255:2022-05
Fire Resistance Rating	Not specified	Category 0, A, B, C, D classification for suitability on fire/smoke doors.	BS EN 1906:2012
Material (Brass)	Leaded Brass Grade LCB 2 as per IS 319.	Materials like CuZn37 or CuZn40 as per EN 12164 / EN 12165.	BS EN 1906:2012

⚠ Verify details from original standards before use

Key Values5

Quick Reference Values

Square spindle size8 mm

Minimum thickness of chromium plating (Grade 1)0.3 µm

Minimum thickness of nickel plating (for brass base)5.0 µm

Durability test cycles200,000 cycles

Salt spray test duration (for zinc alloy)96 hours

Tables & Referenced Sections

Key Tables

Table 1 - Dimensions of Door Handles

Key Clauses

Clause 3 - Materials

Clause 4 - Manufacture, Workmanship and Finish

Clause 5 - Dimensions

Clause 7 - Performance Requirements

Clause 9 - Marking

Frequently Asked Questions4

What materials are specified for the handles?+

The standard covers handles made from Leaded brass (IS 292), aluminium alloys (IS 617), and zinc alloys (IS 742).

Does this standard cover the lock mechanism?+

No, this standard is only for the vertical door handle. The mortice lock itself is covered by other standards like IS 2209.

What is the standard size for the square spindle that operates the handle?+

The handle is designed to suit a standard 8 mm square spindle, as specified in Clause 5.1.

What are the performance tests for these handles?+

The main performance tests are a durability test of 200,000 cycles and a static load test (Clause 7).

QA/QC Inspection Templates

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QA/QC templates coming soon for this code.

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IS 4992 : 1975Specification for door handles for mortice lock (vertical type)

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

BS EN 1906 · DIN 18255 · AS 4145.2

CurrentSpecializedSpecificationBIMArchitectural · Builder Hardware

PDF Google Compare BIS Portal

Link points to Internet Archive / others. Not hosted by InfraLens. Details

Specification for door handles for mortice lock (vertical type)

Overview

Status: Current
Usage level: Specialized
Domain: Architectural — Builder Hardware
Type: Specification
Amendments: Amendment 1 (August 1980); Amendment 2 (December 1993)

International equivalents

Typically used with

IS 209 IS 292 IS 617 IS 1068 IS 1363 IS 2209

Also on InfraLens for IS 4992

5Key values 1Tables 4FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes

Frequently referenced clauses

Cl. 3Materials Cl. 4Manufacture, Workmanship and Finish Cl. 5Dimensions Cl. 7Performance Requirements Cl. 9Marking

Updates & Amendments2 amendments

Amendment 1 (August 1980)

Amendment 2 (December 1993)

Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.

brassaluminium alloyzinc alloymild steel

International Equivalents

Similar International Standards

BS EN 1906:2012BSI (British Standards Institution), UK

MediumCurrent

Building hardware - Lever handles and knob furniture - Requirements and test methods

Covers all types of lever handles, including the vertical type for mortice locks covered by IS 4992.

DIN 18255:2022-05DIN (Deutsches Institut für Normung), Germany

MediumCurrent

Building hardware - Door handle sets, door plates and door rosettes - Terms and definitions, dimensions, requirements and tests

Specifies dimensions, requirements, and tests for door handle sets, closely related to the scope of IS 4992.

AS 4145.2-2008Standards Australia, Australia

LowCurrent

Locksets and hardware for doors and windows - Part 2: Mechanical locksets

Covers the entire mechanical lockset, with handle furniture requirements being a subsection of the standard.

ANSI/BHMA A156.13-2022BHMA (Builders Hardware Manufacturers Association) / ANSI, USA

LowCurrent

Mortise Locks & Latches

Focuses on the performance of the complete mortise lock, including the operational trim (handle), not just the handle itself.

Key Differences

≠International standards mandate extensive cyclic endurance testing (e.g., 100,000 to 200,000 cycles in EN 1906), which is absent in IS 4992:1975.

≠EN 1906 includes requirements and classifications for use on fire/smoke doors and safety-in-use features, which are not addressed in IS 4992.

≠The static load test in IS 4992 is a simple gravity load (450 N), while EN 1906 specifies more complex torque and axial load tests with higher force values depending on the performance grade.

Key Similarities

≈All standards cover the fundamental purpose of a door handle: to operate a mortice lock or latch mechanism.

≈Both IS 4992 and international standards specify and control the use of common materials like brass, aluminium, and zinc alloys for manufacturing handles.

≈All standards address the interface with the lock, primarily through compatibility with a square drive spindle, even if the exact dimensions vary slightly (e.g., 7.9mm in IS vs 8mm in Europe).

≈Dimensional controls for key aspects like fixing centres and lever projection are present in all standards to ensure a degree of interchangeability and basic ergonomics.

Parameter Comparison

Parameter	IS Value	International	Source
Durability (Cyclic Endurance)	Not specified	Grade 6: 100,000 cycles; Grade 7: 200,000 cycles	BS EN 1906:2012
Static Load on Lever	450 N (~45 kgf) applied vertically at the free end. No permanent set allowed.	Tested via torque (e.g., 100 Nm) and axial load (e.g., 1000 N) tests, depending on grade.	BS EN 1906:2012
Corrosion Resistance Test	Prescriptive: e.g., Chromium plating thickness of 0.3 µm over nickel.	Performance: e.g., Grade 3 requires 96 hours Neutral Salt Spray (NSS) test with no base metal corrosion.	BS EN 1906:2012
Spindle Size	To suit a 7.9 mm square spindle.	Typically 8 mm square (most common), but also 7 mm or 9 mm.	DIN 18255:2022-05
Fire Resistance Rating	Not specified	Category 0, A, B, C, D classification for suitability on fire/smoke doors.	BS EN 1906:2012
Material (Brass)	Leaded Brass Grade LCB 2 as per IS 319.	Materials like CuZn37 or CuZn40 as per EN 12164 / EN 12165.	BS EN 1906:2012

⚠ Verify details from original standards before use

Key Values5

Quick Reference Values

Square spindle size8 mm

Minimum thickness of chromium plating (Grade 1)0.3 µm

Minimum thickness of nickel plating (for brass base)5.0 µm

Durability test cycles200,000 cycles

Salt spray test duration (for zinc alloy)96 hours

Tables & Referenced Sections

Key Tables

Table 1 - Dimensions of Door Handles

Key Clauses

Clause 3 - Materials

Clause 4 - Manufacture, Workmanship and Finish

Clause 5 - Dimensions

Clause 7 - Performance Requirements

Clause 9 - Marking

Frequently Asked Questions4

What materials are specified for the handles?+

The standard covers handles made from Leaded brass (IS 292), aluminium alloys (IS 617), and zinc alloys (IS 742).

Does this standard cover the lock mechanism?+

No, this standard is only for the vertical door handle. The mortice lock itself is covered by other standards like IS 2209.

What is the standard size for the square spindle that operates the handle?+

The handle is designed to suit a standard 8 mm square spindle, as specified in Clause 5.1.

What are the performance tests for these handles?+

The main performance tests are a durability test of 200,000 cycles and a static load test (Clause 7).

QA/QC Inspection Templates

📋

QA/QC templates coming soon for this code.

Browse all 300 templates →

IS 4992 : 1975Specification for door handles for mortice lock (vertical type)

Overview

International Equivalents

Key Values5

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions4

QA/QC Inspection Templates

IS 4992 : 1975Specification for door handles for mortice lock (vertical type)

Overview

International Equivalents

Key Values5

Tables & Referenced Sections

Related Resources on InfraLens

Frequently Asked Questions4

QA/QC Inspection Templates