Hexagon flange bolts—Heavg eries--Product grade B
521 GB/T 5800-1986 滚动轴承 仪器精密轴承
Rolling bearings--Instrument precision bearings
522 GB/T 5801-1994 滚动轴承 轻中系列滚针轴承 外形尺寸和公差
Rolling bearings--Light and medium series needle roller bearings--Boundary dimensions and tolerances
523 GB/T 5837-1993 液力偶合器 型式和基本参数
Fluid coupling--Types and basic specifications
524 GB/T 5843-1986 凸缘联轴器
Flanged coupling
525 GB/T 5844-1986 轮胎式联轴器
Coupling with rubber tyre element
526 GB/T 5859-1994 滚动轴承 推力调心滚子轴承 外形尺寸
Rolling bearings--Self-aligning thrust roller bearings--Boundary dimensions
527 GB/T 5868-1986 滚动轴承安装尺寸
Dimensions for mounting rolling bearings
528 GB/T 6069-1985 滚子链联轴器
Roller chain coupling
529 GB/T 6073-1985 LT 型高弹性摩擦离合器
Type LT highly elastic frictionclutch
530 GB/T 6074-1995 板式链、端接头及槽轮
Leaf chains, clevises and sheaves
531 GB/T 6076-1985 传动用短节距精密套筒链
Short pitch transmission precision bush chains
532 GB/T 6170-1986 1型六角螺母 A和B级
Hexagon nuts, style 1--Product grades A and B
533 GB/T 6171-1986 1型六角螺母 细牙 A和B级
Hexagon nuts, style 1--Fine pitch thread--Product gra des A and B
534 GB/T 6172-1986 六角薄螺母 A和B级 倒角
Hexagon thin nuts--Product grades A and B--Chamfered
535 GB/T 6173-1986 六角薄螺母 细牙 A和B级
Hexagon thin nuts--Fine pitch thread--Product grades A and B
536 GB/T 6174-1986 六角薄螺母 B级 无倒角
Hexagon thin nuts--Product grade B--Unchamfered
537 GB/T 6175-1986 2型六角螺母 A和B级
Hexagon nuts, style 2--Product grades A and B
538 GB/T 6176-1986 2型六角螺母 细牙 A和B级
Hexagon nuts, style 2--Fine pitch thread--Product grades A and B
539 GB/T 6177-1986 六角法兰面螺母 A级 Hexagon nuts with flange--Product grade A
540 GB/T 6178-1986 1型六角开槽螺母 A和B级