51 GB/T 90-1985 緊固件驗收檢查、標志與包裝 Acceptance inspection,marking and packaging of fasteners
52 GB/T 91-1986 開口銷 Split pins
53 GB/T 93-1987 標準型彈簧墊圈 Single coil spring lock washers--Normal type
54 GB/T 94.1-1987 彈性墊圈技術條件 彈簧墊圈 Specifications for spring washers--Single coil spring lock washers
55 GB/T 94.2-1987 彈性墊圈技術條件 齒形、鋸齒鎖緊墊圈 Specifications for spring washers--Toothed lock and serrated lock washers
56 GB/T 94.3-1987 彈性墊圈技術條件 鞍形、波形彈性墊圈 Specifications for spring washers--Curved and wave spring washers
57 GB/T 95-1985 平墊圈-C級 Plain washers--Product grade C
58 GB/T 272-1993 滾動軸承 代號方法 Rolling bearing--Identification code
59 GB/T 273.1-1987 滾動軸承 圓錐滾子軸承 外形尺寸方案 Rolling bearings Tapered roller bearings--Boundary dimensions
60 GB/T 273.3-1988 滾動軸承 向心軸承 外形尺寸方案 Rolling bearings Radial bearings-Boundary dimensions
61 GB/T 274-1991 滾動軸承 裝配倒角極限 Rolling bearing chamfer dimension limits
62 GB/T 275-1993 滾動軸承與軸和外殼的配合 Shaft and housing fits for rolling bearings
63 GB/T 276-1994 滾動軸承 深溝球軸承 外形尺寸 Rolling bearings--Deep groove ball bearings--Boundary dimensions
64 GB/T 280-1964 帶氈封圈的單列向心球軸承 結構型式和基本尺寸 Rolling bearings--Single-row radial ball bearings withfelt seals--Types and basic dimensions
65 GB/T 281-1994 滾動軸承 調心球軸承 外形尺寸 Rolling bearings--Self-aligning ball bearings--Boundary dimensions
66 GB/T 283-1994 滾動軸承 圓柱滾子軸承 外形尺寸 Rolling bearings--Cylindrical roller bearings-Boundary dimensions
67 GB/T 285-1994 滾動軸承 雙列圓柱滾子軸承 外形尺寸 Rolling bearings--Double row cylindrical roller bearings-Boundary dimensions
68 GB/T 286-1964 雙列向心球面滾子軸承 結構型式和基本尺寸 Rolling bearings--Double -row radial spherical roller bearings--Types and basic dimensions
69 GB/T 288-1994 滾動軸承 調心滾子軸承 外形尺寸 Rolling bearings--Self-aligning roller bearings-Boundary dimensions
70 GB/T 289-1964 滾針軸承 結構型式和基本尺寸 Needle roller bearings--Types and basic dimensions
71 GB/T 291-1964 螺旋滾子軸承 結構型式和基本尺寸 Rolling bearings with helically wound cylindrical rollers--Types and basic dimensions
72 GB/T 292-1994 滾動軸承 角接觸球軸承 外形尺寸 Rolling bearings--Angular contact ball bearings--Boundary dimensions
73 GB/T 294-1994 滾動軸承 三點和四點接觸球軸承 外形尺寸 Rolling bearings--Three point and four point contact ball bearings--Boundary dimensions
74 GB/T 296-1994 滾動軸承 雙列角接觸球軸承 外形尺寸 Rolling bearings--Double row angular contact ball bearings--Boundary dimensions
75 GB/T 297-1994 滾動軸承 圓錐滾子軸承 外形尺寸 Rolling bearings--Tapered roller bearings--Boundary dimensions
76 GB/T 299-1995 滾動軸承 雙列圓錐滾子軸承 外形尺寸 Rolling bearings--Metric double row tapered roller bearings--Boundary dimensions