IS 5899:1970 is the Indian Standard (BIS) for specification - bath-room latches. This standard specifies the requirements for materials, dimensions, manufacturing, finishing, and performance of bathroom latches. It covers two types of latches commonly used on bathroom and lavatory doors, detailing aspects like construction, strength, and corrosion resistance.
Specification - bath-room latches
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Design Specification | Prescriptive, with detailed dimensional drawings provided in the standard. | Performance-based; any design is acceptable if it meets test criteria. | BS EN 12209:2016 |
| Durability / Endurance Test | No cyclic endurance test specified. Requires only 'smooth operation'. | Graded system based on test cycles, e.g., Grade A (50,000 cycles) to Grade X (200,000 cycles). | BS EN 12209:2016 |
| Material Specification | Prescriptive: Brass (IS: 319), Cast Iron (IS: 210), or Mild Steel. | Not specified; materials must be capable of passing strength, corrosion, and durability tests. | AS 4145.2-2008 |
| Corrosion Resistance Test | Single requirement: Must pass salt spray test as per IS: 2074. | Graded system (5 grades) based on hours in Neutral Salt Spray, e.g., Grade 3 = 96 hours. | BS EN 12209:2016 |
| Minimum Bolt Projection | 10 mm | 10 mm (for certain latch types and security grades) | AS 4145.2-2008 |
| Spring Material | Spring steel wire (IS: 4454) or phosphor bronze wire (IS: 7608). | Not specified; spring performance is evaluated as part of the overall durability cycle test. | BS EN 12209:2016 |