Descripteon:GB170-86 DIN934 ISO 4032 Grade: 4.8 5.8 6.8 8.8 Size:M6-M24 GB6170 ISO4032 Thread size M5 M6 M8 M10 M12 M16 M20 M24 pitch ? ? ? ? ? ? ? ? m 4.7 5.2 6.8 8.4 10.8 14.8 18 22 e 8.79 11.05 14.38 17.8 20 26.8 33 40 s 8 10 13 16 18 24 30 36 Din934 Thread size M6 M8 M10 M12 M14 M16 M18 M20 pitch 1 1.25 1.5 1.75 2 2 2.5 2.5 m 5 6.5 8 10 11 13 15 16 e 11.05 14.38 18.9 21.1 24.49 26.75 29.56 32.95 s 10 13 17 19 22 24 27 30 ???? The company has been certified by ISO9001:2000 International Quality Management System, it was honored with the title of Hebei Province 7th High Quality Products in Consumers in 2003 and the quality of our products is insured by PICC. In 2006, the Company was regarded as Qualified Enterprise for Product Quality inspection in Standard Parts Industry of Hebei Province And in 2007, it was regarded as "Contract-honoring and Faith keeping Enterprises" As a member unit of China General Machine Components Industry Association, the products of the Company are widely used in the Industries including space industry, automobile industry motorcyole industry, agricultural machinery industry,construction,transportation power electronic industry meehanics,chemical industry household appliance industry and military industry etc.