43 GB/T 78-1985 内六角锥端紧定螺钉 Hexagon socket set screws with cone point
44 GB/T 79-1985 内六角圆柱端紧定螺钉 Hexagon socket set screws with dog point
45 GB/T 80-1985 内六角凹端紧定螺钉 Hexagon socket set screws with cup point
46 GB/T 83-1988 方头长圆柱球面端紧定螺钉 Square set screws with long dog point and rounded end
47 GB/T 84-1988 方头凹端紧定螺钉 Square set screws with cup point
48 GB/T 85-1988 方头长圆柱端紧定螺钉 Square set screws with long dog point
49 GB/T 86-1988 方头短圆柱锥端紧定螺钉 Square set screws with short dog point and cone end
50 GB/T 89-1976 螺钉 技术条件 Screws--Technical requirements
51 GB/T 90-1985 紧固件验收检查、标志与包装 Acceptance inspection,marking and packaging of fasteners
52 GB/T 91-1986 开口销 Split pins
53 GB/T 93-1987 标准型弹簧垫圈 Single coil spring lock washers--Normal type
54 GB/T 94.1-1987 弹性垫圈技术条件 弹簧垫圈 Specifications for spring washers--Single coil spring lock washers
55 GB/T 94.2-1987 弹性垫圈技术条件 齿形、锯齿锁紧垫圈 Specifications for spring washers--Toothed lock and serrated lock washers
56 GB/T 94.3-1987 弹性垫圈技术条件 鞍形、波形弹性垫圈 Specifications for spring washers--Curved and wave spring washers
57 GB/T 95-1985 平垫圈-C级 Plain washers--Product grade C
58 GB/T 272-1993 滚动轴承 代号方法 Rolling bearing--Identification code
59 GB/T 273.1-1987 滚动轴承 圆锥滚子轴承 外形尺寸方案 Rolling bearings Tapered roller bearings--Boundary dimensions
60 GB/T 273.3-1988 滚动轴承 向心轴承 外形尺寸方案 Rolling bearings Radial bearings-Boundary dimensions
61 GB/T 274-1991 滚动轴承 装配倒角极限 Rolling bearing chamfer dimension limits
62 GB/T 275-1993 滚动轴承与轴和外壳的配合 Shaft and housing fits for rolling bearings