227 GB/T 974-1976 十字槽120°半沉头螺钉 Screws,cross recessed,120°raised countersunk head
228 GB/T 975-1986 管状铆钉 Pipe type rivets
229 GB/T 1007-1976 小六角较扁螺母 Small hexagon medium thin nuts
230 GB/T 1009-1978 螺母专用技术条件 Specified specifications for nuts
231 GB/T 1011-1986 大扁圆头铆钉 Truss head rivets
232 GB/T 1012-1986 120°半沉头铆钉 120°degree oval countersunk rivets
233 GB/T 1013-1986 平锥头半空心铆钉 Cone head semi-tubuler rivets
234 GB/T 1014-1986 大扁圆头半空心铆钉 Truss head semi-tubuar rivets
235 GB/T 1015-1986 沉头半空心铆钉 Countersunk head semi-tublar rivets
236 GB/T 1016-1986 无头铆钉 Headless rivets
237 GB/T 1017-1978 铆钉专用技术条件 Specified specifications for rivets
238 GB/T 1021-1976 角形垂直单耳止动垫圈 Lock washers with angular upturn tab perpendicular to the lug
239 GB/T 1022-1976 角形单耳止动垫圈 Lock washers with angular upturn tab in line to the lug
240 GB/T 1023-1976 角形垂直外舌止动垫圈 Lock washers with angular upturn tab perpendicular to the external tab
241 GB/T 1024-1976 角形外舌止动垫圈 Lock washers with angular upturn tab in line to the external tab
242 GB/T 1030-1988 内球面垫圈 Inner sphere washers
243 GB/T 1047-1995 管道元件的公称通径 Nominal size for pipe components
244 GB/T 1048-1990 管道元件公称压力 Nominal pressure for pipe components
245 GB/T 1095-1979 平键 键和键槽的剖面尺寸 Parallel keys--Dimensions of cross sections and keyways
246 GB/T 1096-1979 普通平键 型式尺寸 Plain parallel keys--Types and dimensions
247 GB/T 1097-1979 导向平键 型式尺寸 Feather keys--Types and dimensions