Flat counter sunk nib bolts
... ts 沉头方颈螺栓 Flat counter sunk nib bolts 沉头带榫螺栓 Cross recessed pan head tapping screws 十字槽盘头自攻螺钉 ...
Flat countersunk nib bolts
• 沉头带榫螺栓 Flat countersunk nib bolts • 沉头高方颈螺栓 Flat countersunk square neck bolts with long square ..
nibbed countersunk head bolt