合作開發 Round Head Square Neck Bolts/Round Head Carriage Bolt
馬車螺栓也稱圓頭四角頸螺栓. 圓滑凸起的頭部銜接四角體頸部及依需求搭配各式機械螺旋牙型.在技術上克服不銹鋼材多角體及曲線塑形的困難及外觀上的改進, 讓馬車螺栓在木料建構與金屬等多媒材結合運用上更兼具實用與美觀.
		1	Round Head Square Neck Bolt / Carriage Bolt Carriage Bolt M8-1.25×55
		2	Round Head Square Neck Bolt / Carriage Bolt Carriage Bolt ＃10-32×4-1/2" Carriage Bolt ＃10-32×4"
		3	Round Head Square Neck Bolt / Carriage Bolt Carriage Bolt M6-1.0×45
		4	Round Head Square Neck Bolt / Carriage Bolt Carriage Bolt M12-1.75×30
		5	Round Head Square Neck Bolt / Carriage Bolt Carriage Bolt M5-0.8×75