The hammer must pass a rigorous inspection to be certified for competition. It is the only track and field implement that has moving parts and therefore must be strictly regulated. The following is an excerpt from some of the main rules governing the hammer throw.
1. The implement must be certified in weight, length, diameter, shank and center of gravity.
to. Minimum weight 7,260 kg for senior men, 6,000 kg for young men, 5,000 kg for young men, 4 kg for women (senior, junior and youth)
B. Maximum length 121.5 cm men, 119.5 cm women
vs. Minimum length 117.7 cm men, 116 cm women
D. Minimum ball diameter 110 mm men, 95 mm women
me. Maximum ball diameter 130mm men, 110mm women
F. The handle must form an isosceles triangle with the long sides equal to 110 mm, it must be of rigid construction that does not stretch appreciably while casting
gram. The cable must be of a straight, unbroken length of spring steel cable not less than 3mm in diameter, which cannot be appreciably stretched while casting
h. The center of gravity of the hammer head must not be more than 6 mm from the center of the sphere.
2. The launcher must remain in the circle (7 feet in diameter) until the implement lands.
3. The caster must wait until the implement has landed before exiting the rear half of the circle under control.
4. Implement must land in sector (34.92 degrees).
5. Any pitch that lands in the sector and is not a foot foul is a legal shot.
While the different governing bodies have more specific rules on the requirements of the handle and the acceptable tolerances of the materials used in the construction of hammers. These are the basic rules that are fairly consistent across all leagues and levels of competition for hammer throwing.