Link points to Internet Archive / others. Not hosted by InfraLens. Details
IS 3818:1992 is the Indian Standard (BIS) for continuous (piano) hinges -specification. This standard specifies the requirements regarding materials, dimensions, manufacture, and finish of continuous (piano) hinges used primarily in cabinet making, furniture, and general building joinery.
! Continuous hinges distribute weight and stress evenly along the full length of a door or lid, making them ideal for thin materials.
! Ensure the pin material is compatible with the flap material (e.g., stainless steel pins with aluminum flaps) to prevent galvanic corrosion in humid environments.
! Screws should be countersunk perfectly flush to allow the hinge to close seamlessly.
Both standards cover continuous hinges, but BHMA focuses on performance grading for architectural applications.
BS EN 1935:2002BSI/CEN, UK/Europe
LowCurrent
Building hardware. Single-axis hinges. Requirements and test methods
Covers performance of single-axis hinges for doors but does not specifically address the continuous (piano) hinge form factor.
Key Differences
≠The most significant difference is the lack of performance grading in IS 3818. ANSI/BHMA A156.26 specifies three performance grades (1, 2, and 3) based on extensive cycle, load, and abuse testing, which is absent in the Indian standard.
≠IS 3818 is a prescriptive standard focused on material composition and dimensions. In contrast, ANSI/BHMA A156.26 is a performance-based standard, focusing on how the hinge performs in standardized tests, allowing for more innovation in design (e.g., geared hinges).
≠The scope of hinge types in ANSI/BHMA A156.26 is broader, explicitly covering both traditional pin-and-barrel hinges and modern geared continuous hinges. IS 3818 only covers the pin-and-barrel type.
≠Test requirements in ANSI/BHMA A156.26 are far more rigorous, including cycle tests up to 1.5 million cycles and specific vertical/lateral load tests. IS 3818 testing is limited to dimensional verification, material compliance, and visual inspection.
Key Similarities
≈Both standards define the basic form factor of a continuous hinge, comprising two leaves connected along their length by a series of knuckles and a pin.
≈A similar range of base materials is specified in both standards, including steel, stainless steel, brass, and aluminum alloys, providing options for different applications and environments.
≈Both standards provide tables and specifications for key dimensions like leaf thickness, open width, and standard lengths, ensuring a degree of interchangeability for basic sizing.
≈Both standards acknowledge the application of various surface finishes to improve corrosion resistance and aesthetics, such as plating for steel and anodizing for aluminum.
Parameter Comparison
Parameter
IS Value
International
Source
Performance Testing (Cycle Life)
Not specified. The standard focuses on dimensional and material requirements.