黑铁圆头铆钉
black mild steel round head rivet
小半圆头铆钉
Round head rivets with small head--Black
圆头铆钉
round rivet
round head rivet
snapped rivet
round-head rivet
bullhead rivet
snap rivet
button-head rivet
cup rivet
snap head rivet (round-head rivet
bottom head rivet
full head rivet
button head rivet
conical head rivet
snap head rivet
凹槽椭圆头螺钉
oval fillister-head screw
高温椭圆头油封
high temperature oval head seal
裂纹－圆－椭圆模型
crack-holeellipse interaction model
椭圆埋头铆钉
oval countersunk head rivet
椭圆头半空心铆钉
oval head socket shank rivet