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
63 GB/T 276-1994 滚动轴承 深沟球轴承 外形尺寸 Rolling bearings--Deep groove ball bearings--Boundary dimensions
64 GB/T 280-1964 带毡封圈的单列向心球轴承 结构型式和基本尺寸 Rolling bearings--Single-row radial ball bearings withfelt seals--Types and basic dimensions
65 GB/T 281-1994 滚动轴承 调心球轴承 外形尺寸 Rolling bearings--Self-aligning ball bearings--Boundary dimensions
66 GB/T 283-1994 滚动轴承 圆柱滚子轴承 外形尺寸 Rolling bearings--Cylindrical roller bearings-Boundary dimensions
67 GB/T 285-1994 滚动轴承 双列圆柱滚子轴承 外形尺寸 Rolling bearings--Double row cylindrical roller bearings-Boundary dimensions
68 GB/T 286-1964 双列向心球面滚子轴承 结构型式和基本尺寸 Rolling bearings--Double -row radial spherical roller bearings--Types and basic dimensions
69 GB/T 288-1994 滚动轴承 调心滚子轴承 外形尺寸 Rolling bearings--Self-aligning roller bearings-Boundary dimensions
70 GB/T 289-1964 滚针轴承 结构型式和基本尺寸 Needle roller bearings--Types and basic dimensions
71 GB/T 291-1964 螺旋滚子轴承 结构型式和基本尺寸 Rolling bearings with helically wound cylindrical rollers--Types and basic dimensions
72 GB/T 292-1994 滚动轴承 角接触球轴承 外形尺寸 Rolling bearings--Angular contact ball bearings--Boundary dimensions
73 GB/T 294-1994 滚动轴承 三点和四点接触球轴承 外形尺寸 Rolling bearings--Three point and four point contact ball bearings--Boundary dimensions
74 GB/T 296-1994 滚动轴承 双列角接触球轴承 外形尺寸 Rolling bearings--Double row angular contact ball bearings--Boundary dimensions
75 GB/T 297-1994 滚动轴承 圆锥滚子轴承 外形尺寸 Rolling bearings--Tapered roller bearings--Boundary dimensions
76 GB/T 299-1995 滚动轴承 双列圆锥滚子轴承 外形尺寸 Rolling bearings--Metric double row tapered roller bearings--Boundary dimensions