451 GB/T 5282-1985 开槽盘头自攻螺钉 Slotted pan head tapping screws
452 GB/T 5283-1985 开槽沉头自攻螺钉 Slotted countersunk head tapping screws
453 GB/T 5284-1985 开槽半沉头自攻螺钉 Slotted raised countersunk head tapping screws
454 GB/T 5285-1985 六角头自攻螺钉 Hexagon head tapping screws
455 GB/T 5286-1985 螺栓、螺钉和螺母用平垫圈 总方案 Plain washers for bolts,screws and nuts--General plan
456 GB/T 5287-1985 特大垫圈 C级 Plain washers--Extra large series--Product grade C
457 GB/T 5625.1-1985 扩口式端直通管接头 Flared type tube fittings--Straight thread connector--Assembly
458 GB/T 5625.2-1985 扩口式端直通管接头体 Flared type tube fittings--Straight thread connector--Body
459 GB/T 5626.1-1985 扩口式锥螺纹直通管接头 Flared type tube fittings--Male connector--Assembly
460 GB/T 5626.2-1985 扩口式锥螺纹直通管接头体 Flared type tube fittings--Male connector-Body
461 GB/T 5627.1-1985 扩口式锥螺纹长管接头 Flared typed tube fittings--Straight taread long connector--Assembly
462 GB/T 5627.2-1985 扩口式锥螺纹长管接头体 Flared type tube fittings--Straight thread long connector--Body
463 GB/T 5628.1-1985 扩口式直通管接头 Flared type tube fittings--Union--Assembly
464 GB/T 5628.2-1985 扩口式直通管接头体 Flared type tube fittings--Union--Body
465 GB/T 5629.1-1985 扩口式锥螺纹直角管接头 Flared type tube fittings--Male elbow--Assembly
466 GB/T 5629.2-1985 扩口式锥螺纹直角管接头体 Flared type tube fittings--Male elbow--Body
467 GB/T 5630.1-1985 扩口式直角管接头 Flared type tube fittings--Union elbow--Assembly
468 GB/T 5630.2-1985 扩口式直角管接头体 Flared type tube fittings--Union elbow--Body
469 GB/T 5631.1-1985 扩口式可调向端直角管接头 Flared type tube fittings--Straight thread elbow-- Assembly