Half-round head rivets are solid rivets whose heads are semi-circular. Because the semi-circular heads are particularly like mushroom heads, they are also called mushroom head rivets.

Qingdao Haorui Steel Products Co., Ltd. (formerly Qingdao Chengyang Dahua Standard Parts Factory, established in 1992) is a professional manufacturer of Qingdao standard parts and Qingdao non-standard fasteners. The company's main products are:

Bolts: Hexagon bolts, carriage bolts, square neck bolts, U-shaped bolts, half-round head bolts, countersunk head bolts, T-shaped bolts, environmental protection bolts, inch bolts, American bolts, bolts with holes, various special-shaped bolts and non-standard bolts;

Nuts: lock nuts, flange nuts, cap nuts, various slotted thickened non-standard nuts;

Rivets: blind rivets, solid rivets, semi-tubular rivets;

Screws: Ordinary external hexagonal screws, inch screws, American screws, internal hexagonal machine screws, internal hexagonal screws, cross recessed pan head machine screws, cross recessed countersunk head machine screws, cross recessed flat head screws, slotted pan head screws, combination Screws, ring screws, machine screws, and various washer combined machine screws, etc.