IS 363:1993 is the Indian Standard (BIS) for catches for doors and windows. This standard specifies the requirements for materials, dimensions, manufacturing process, and finishes for catches used on doors and windows. It serves as a quality and procurement guideline for architects, builders, and manufacturers to ensure proper fit, finish, and durability of builder's hardware.
Specifies requirements for metallic catches for general use on doors and windows.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Endurance Test Cycles (Ball Catch) | 10,000 cycles | 100,000 cycles (Grade 1) | ANSI/BHMA A156.16-2018 |
| Corrosion Resistance Test Method | Prescriptive finish (e.g., plating thickness). No salt spray test defined. | Performance-based Neutral Salt Spray (NSS) test (e.g., 96 hours for Class 3). | BS EN 12051:2000 |
| Spring Material (Ball Catch) | Phosphor bronze or stainless steel wire | Material must be corrosion-resistant or have a finish that meets performance tests; no specific material is mandated. | ANSI/BHMA A156.16-2018 |
| Strength Test (Roller Catch) | No specific quantitative force value; based on 'satisfactory working'. | Static load test of 445 N (100 lbf) without damage for Grade 1. | ANSI/BHMA A156.16-2018 |
| Material Composition (Brass) | Prescribed grade, e.g., CuZn40Pb2 as per IS 319. | Not prescribed; any material that meets performance requirements is acceptable. | ANSI/BHMA A156.16-2018 |
| Dimensional Tolerances | Specified for various components, e.g., ±0.2 mm on body length. | Generally not specified; fit and function are governed by performance tests. | ANSI/BHMA A156.16-2018 |