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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9074.10-1988 |
Cross recessed raised countersunkhead screw and countersunk external toothed lock washer assemblies 十字槽半沉头螺钉和锥形锁紧垫圈组合件 |
China National Standards countersunkhead |
 English PDF |
| GB/T 974-1976 |
Screws，cross recessed，120° raised countersunkhead 十字槽120°半沉头螺钉 |
China National Standards countersunkhead |
English PDF |
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