IS 7196:1974 is the Indian Standard (BIS) for hold fast. This Indian Standard provides the specifications for manufacturing mild steel holdfasts. It details the material requirements, dimensions, tolerances, workmanship, and finish for both bent lug and straight lug types used to fix door and window frames into masonry walls.
Specification for hold fast
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Design Philosophy | Prescriptive (defines exact shape and dimensions) | Performance-based (defines required strength and durability) | EN 845-1:2013+A1:2016 |
| Material Specification | Mild steel as per IS 2062 | Carbon steel (e.g., S235), Austenitic stainless steel (e.g., 1.4301), etc. | EN 845-1:2013+A1:2016 |
| Corrosion Protection | One coat of black enamel, tar, or bitumen | Categorized by coating mass (e.g., Z275 for 275 g/m² zinc) or material type | EN 845-1:2013+A1:2016 |
| Shank Thickness | 5 mm or 6 mm (depending on size) | Not specified; determined by manufacturer to meet declared performance | EN 845-1:2013+A1:2016 |
| Shank Length | 200 mm or 300 mm | Not specified; determined by manufacturer design | EN 845-1:2013+A1:2016 |
| Strength Declaration | Implicit in the design; no value specified | Mandatory declaration of load capacity (tension/compression/shear) based on testing | EN 845-1:2013+A1:2016 |
| Marking | Manufacturer's name/trademark and ISI Mark | CE marking, manufacturer, product code, reference to EN 845-1, declared performance | EN 845-1:2013+A1:2016 |