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International Standard Category: Bolts, screws, studs

GB 5284-1985    Slotted raised countersunk head tapping screws
开槽半沉头自攻螺钉 ;
Category No.:21.060.10 Valid Status:superseded
Issued Organization:SAC Issued Date:1985-08-01
Implemented Date:1986-6-1 Abolished Date:
Superseded Standard.:GB/T 5284-2017 Slotted raised countersunk(oval)head tapping screws
Superseded Date:2018-2-1
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