IS 4953:1989 is the Indian Standard (BIS) for wooden handles for hand hammers-. This standard specifies the material requirements, preferred timber species, dimensions, and tolerances for wooden handles used in hand hammers. It ensures the handles possess adequate impact strength and durability for safe manual operation.
Wooden handles for hand hammers-
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Primary Timber Recommendations | Specifies Indian species like Sal, Babul, Anjan, as well as Ash and Hickory. | Primarily Hickory and Ash. DIN 5111 also includes Robinia (Acacia). | DIN 5111:2013 / ASME B107.400-2018 |
| Moisture Content | 12% ± 3% (i.e., 9% to 15%) | 10% to 14% | ASME B107.400-2018 |
| Grain Slope | Qualitative: 'shall run along the length of the handle'. | Quantitative: Maximum grain slope of 1 in 15 from the longitudinal axis. | ASME B107.400-2018 |
| Handle-Head Assembly Test | Not specified in the handle standard. | Mandatory. A pull or push-out force test is specified (e.g., 2.2 kN for a 0.5 kg hammer). | ISO 15601:2004 |
| Quality Grading System | No explicit quality grades are defined. | Defines quality classes (e.g., Class A, Class B) based on grain orientation and defects. | DIN 5111:2013 |
| Surface Finish | Smooth, free from splinters. May be waxed, varnished or oil finished. | Smooth and free from splinters, may be clear lacquered, oiled or unfinished. | DIN 5111:2013 |