501 gb/t 5648-1985 扩口式 b 型管接头螺母 flared type tube fittings——style b nut
502 gb/t 5649-1985 扩口式管接头锁紧螺母 flared type tube fittings——locknut
503 gb/t 5650-1985 扩口式管接头空心螺栓 flared type tube fittings——inverted flare bolts
504 gb/t 5651-1985 扩口式管接头密合垫 flared type tube fittings——seat insert
505 gb/t 5652-1985 扩口式管接头锁紧螺母垫圈 flared type tube fittings——back-up washer
506 gb/t 5653-1985 扩口式管接头技术条件 specification for flared type tube fittings
507 gb/t 5779.1-1986 紧固件表面缺陷——螺栓、螺钉和螺柱——一般要求 surface discontinuities of fasteners on bolts, screws and studs for general requirements
508 gb/t 5779.2-1986 紧固件表面缺陷——螺母——一般要求 surface discontinuities of fasteners on nuts for general requirements
509 gb/t 5779.3-1986 紧固件表面缺陷——螺栓、螺钉和螺柱——特殊要求 surface discontinuities of fasteners on bolts screws and studs—special requirements
510 gb/t 5780-1986 六角头螺栓——c级 hexagon head bolts—product grade c
511 gb/t 5781-1986 六角头螺栓——全螺纹——c级 hexagon head bolts—full thread—product grade c
512 gb/t 5782-1986 六角头螺栓——a和b级 hexagon head bolts—product grades a and b
513 gb/t 5783-1986 六角头螺栓——全螺纹 a和b级 hexagon head bolts—full thread—product grades a and b
514 gb/t 5784-1986 六角头螺栓——细杆 b级 hexagon head bolts—reduced shank—product grade b
515 gb/t 5785-1986 六角头螺栓——细牙——a和b级 hexagon head bolts—fine pitch thread—product grades a and b
516 gb/t 5786-1986 六角头螺栓——细牙——全螺纹——a和b级 hexagon head bolts—fine pitch thread—full thread—product grades a and b
517 gb/t 5787-1986 六角法兰面螺栓——b级 hexagon flange bolts—product grade b
518 gb/t 5788-1986 六角法兰面螺栓——细杆——b级 hexagon flange bolts——reduced shank——product grade b
519 gb/t 5789-1986 六角法兰面螺栓——加大系列——b级 hexagon flange bolts—heavy series—product grade b
520 gb/t 5790-1986 六角法兰面螺栓——加大系列——细杆——b级 hexagon flange bolts—heavg eries——product grade b
521 gb/t 5800-1986 滚动轴承 仪器精密轴承 rolling bearings——instrument precision bearings
522 gb/t 5801-1994 滚动轴承 轻中系列滚针轴承 外形尺寸和公差 rolling bearings——light and medium series needle roller bearings——boundary dimensions and tolerances
523 gb/t 5837-1993 液力偶合器 型式和基本参数 fluid coupling——types and basic specifications
524 gb/t 5843-1986 凸缘联轴器 flanged coupling
525 gb/t 5844-1986 轮胎式联轴器 coupling with rubber tyre element
526 gb/t 5859-1994 滚动轴承 推力调心滚子轴承 外形尺寸 rolling bearings——self-aligning thrust roller bearings——boundary dimensions
527 gb/t 5868-1986 滚动轴承安装尺寸 dimensions for mounting rolling bearings
528 gb/t 6069-1985 滚子链联轴器 roller chain coupling
529 gb/t 6073-1985 lt 型高弹性摩擦离合器 type lt highly elastic frictionclutch
530 gb/t 6074-1995 板式链、端接头及槽轮 leaf chains, clevises and sheaves
531 gb/t 6076-1985 传动用短节距精密套筒链 short pitch transmission precision bush chains
532 gb/t 6170-1986 1型六角螺母 a和b级 hexagon nuts, style 1——product grades a and b
533 gb/t 6171-1986 1型六角螺母 细牙 a和b级 hexagon nuts, style 1——fine pitch thread——product gra des a and b
534 gb/t 6172-1986 六角薄螺母 a和b级 倒角 hexagon thin nuts——product grades a and b——chamfered
535 gb/t 6173-1986 六角薄螺母 细牙 a和b级 hexagon thin nuts——fine pitch thread——product grades a and b
536 gb/t 6174-1986 六角薄螺母 b级 无倒角 hexagon thin nuts——product grade b——unchamfered
537 gb/t 6175-1986 2型六角螺母 a和b级 hexagon nuts, style 2——product grades a an
538 gb/t 6176-1986 2型六角螺母 细牙 a和b级 hexagon nuts, style 2——fine pitch thread——product grades a and b 539 gb/t 6177-1986 六角法兰面螺母 a级 hexagon nuts with flange——product grade a
540 gb/t 6178-1986 1型六角开槽螺母 a和b级 hexagon slotted and castle nuts, style 1——product grades a and b
541 gb/t 6179-1986 1型六角开槽螺母 c级 hexagon slotted nuts, style 1——product grade c
542 gb/t 6180-1986 2型六角开槽螺母 a和b级 hexagon slotted and castle nuts,style 2——product grades a and b
543 gb/t 6181-1986 六角开槽薄螺母 a和b级 hexagon thin slotted nuts——product grades a and b
544 gb/t 6182-1986 2型非金属嵌件六角锁紧螺母 prevailing torque type hexagon nuts (with non-metallic insert), style 2
545 gb/t 6183-1986 非金属嵌件六角法兰面锁紧螺母 prevailing torque type hexagon nuts with flange (with non-metallic insert)
546 gb/t 6184-1986 1型全金属六角锁紧螺母 prevailing torque type all-metal hexagon nuts, style 1
547 gb/t 6185-1986 2型全金属六角锁紧螺母 5,8,10和12级 prevailing torque type all-metal hexagon nuts, style 2——property classes 5,8, 10 and 12
548 gb/t 6186-1986 2型全金属六角锁紧螺母 9级 prevailing torque type all-metal hexagon nuts, style 2——property class 9
549 gb/t 6187-1986 全金属六角法兰面锁紧螺母 prevailing torque type all-metal hexagon nuts with flange
550 gb/t 6188-1986 紧固件用六角花形 t型 hexagon lobular for fasteners——type t