Class 8.8 Bolt

Class 8.8 bolts are one of the most common structure of hex bolts in the market. they provide acceptable rate of strength and hardness since they have average percentage of carbon in their structure, standing in between class 5.6 low carbon and 10.9 or 12.9 class which are high carbon steel hex bolts. class 8.8 bolts can withstand 80 kgs load per square millimeters and will remain in the elastic stage up to 80% of their proof load.

Load in Elastic Area N	Proof Load N	Proof Load Kg	Effective Area mm^2	Minor Diameter mm	Major Diameter mm	Bolt Class
7957	9947	1014	12.68	4.019	M5	8.8
11158	13948	1421	17.733	4.773	M6	8.8
20605	25757	2625	32.82	6.466	M8	8.8
32810	41013	4180	52.26	8.16	M10	8.8
47847	59809	6096	76.21	9.853	M12	8.8
65697	82121	8371	104.64	11.546	M14	8.8
90434	113042	11523	144.04	13.546	M16	8.8
110788	138485	14116	176.46	14.993	M18	8.8
141810	177262	18069	225.87	16.993	M20	8.8
177785	222231	22653	283.17	18.993	M22	8.8
203482	254353	25928	324.1	20.319	M24	8.8
325673	407091	41497	518.72	25.706	M30	8.8
476480	595600	60713	758.92	31.093	M36	8.8
655841	819802	83568	1044.6	36.479	M42	8.8

Bolt and nut