六角螺母 hexagonal nut
方螺母 square nut
蝶形螺母 wing nut
扁螺母 flat nut
锁紧螺母 lock nut
垫圈 washer
平垫圈 plain washer
球面垫圈 spherical washer
弹簧垫圈 spring washer
方垫圈 square washer
斜垫圈 slant washer
销轴 pinned shan
销 pin
开口销 cotter pin
定位销 dowel pin
带孔销 pin with hole
圆锥销 taper pin
铆钉 rivet
键 key
2.2 螺纹
左螺纹left hand thread
右螺纹 right hand thread
管螺纹 pipe thread
锥管螺纹 taper pipe thread
直管螺纹straight pipe thread
梯形螺纹 trapezoid thread
螺距pitch of thread
粗牙螺纹coarse thread
细牙螺纹 fine thread
特细牙螺纹extra fine thread
通长螺纹full thread
惠氏螺纹whitworth thread
公制螺纹 metric ibread
美国标准锥管螺纹 American standard taper pipe thread (NPT)
螺孔 tap
3 材料、型钢及填料
3.1 金属材料
3.1.1 黑色金属 Ferrous metal
碳素钢 carbon steel (CS)
低碳钢 low-carbon steel
中碳钢 medium-carbon steel
高碳钢 high-carbon steel
普通碳素钢 general carbon steel
优质碳素钢 high-quality carbon steel
普通低合金结构钢 general structure low-alloy steel
合金结构钢 structural alloy steel
合金钢 alloy steel
低合金钢 low alloy steel
中合金钢 medium alloy steel
高合金钢 high alloy steel
耐热钢 heat resisting steel
高强度钢 high strength steel
