DIN6796 Heavy Duty Bolting Washer has been specially developed for high-strength bolts of grades 8.8-12.9. This represents the most powerful form of safety washer in the form of a disc spring. The load of the washers has been matched to these bolts and is 70 to 90% of the bolt load in the flat state. These Heavy Duty Bolting Washers conform to DIN6796, and are designed for high demands on the protection of bolt joints. As a highly progressive load increase occurs at the end of the spring deflection when the washer is flattened the load has been indicated as double the calculated value. Tests have shown that these values are comparable with the measured value. The characteristic features of DIN6796 Heavy Duty Bolting Washer: ·High axial load ·Optimum compenstation for setting in the joint ·Reduction of the dynamic loading of the screw ·Uniform concentric loading and high safety through a high degree of spring action ·Suitable for captive fitting on a wide range of bolts

Part	Outside	Inside	Thickness	Overall	Approximate	Weight per	Bolt
number	Dia (De)	Dia (Di)	( t )	Height (lo)	Force to flat	1,000 pcs	Size
HD52204	5.0	2.2	0.40	0.60	628	0.05	2.0
HD62705	6.0	2.7	0.50	0.72	946	0.09	2.5
HD73206	7.0	3.2	0.60	0.85	1,320	0.14	3.0
HD83708	8.0	3.7	0.80	1.06	2,410	0.25	3.5
HD9431	9.0	4.3	1.00	1.30	3,770	0.38	4.0
HD115312	11.0	5.3	1.20	1.55	5,480	0.69	5.0
HD146415	14.0	6.4	1.50	2.00	8,590	1.43	6.0
HD1774175	17.0	7.4	1.75	2.30	11,300	2.53	7.0
HD18842	18.0	8.4	2.00	2.60	14,900	3.13	8.0
HD2310525	23.0	10.5	2.50	3.20	22,100	6.45	10.0
HD29133	29.0	13.0	3.0	3.95	34,100	12.4	12.0
HD351535	35.0	15.0	3.5	4.65	46,000	21.6	14.0
HD39174	39.0	17.0	4.0	5.25	59,700	30.4	16.0
HD421945	42.0	19.0	4.5	5.8	74,400	38.9	18.0
HD45215	45.0	21.0	5.0	6.4	93,200	48.8	20.0
HD492355	49.0	23.0	5.5	7.05	113,700	63.5	22.0
HD56256	56.0	25.0	6.0	7.75	131,000	92.9	24.0
HD602865	60.0	28.0	6.5	8.35	154,000	113	27.0
HD70317	70.0	31.0	7.0	9.2	172,000	170	30.0