4 prong T nuts Xinlan Fasteners remains a family run business.A great history brings a great deal of experience, unrivalled in the Fastener and Special Bolting Industry. stud bolt,Expansion bolt,Mining Anchor nuts,U bolt,Threaded rod,Segment Bolt. PRODUCTS DESCRIPTION Four-claw nuts are parts that are tightly connected with mechanical equipment. They can only be connected by internal threads with the same specifications. For example, M4-P.7 nuts can only be connected with M4-P.7 series bolts (in nuts, the inner diameter of M4 finger nuts is about 4mm, and the distance between 0.7 finger and two threaded teeth is 0.7mm). Established in our earliest form in 2005, Xinlan Fasteners remains a family run business.A great history brings a great deal of experience, unrivalled in the Fastener and Special Bolting Industry. We are still a privately owned company and are experts in our field. XinLan has proudly become a major supplier of prototype and full production quantities to numerous industries including: Building, machinery, railway, hoisting，steel, power plants, ports and Metal Fabricating. XinLan continues to lead the way in the precisiornnachined fastener industry because we listen and respond to the needs of our customers by providing Fastener nut manufacturer:Yongnian Xinlan Fasteners Co., Ltd. If you have any question on Stud Bolt, Threaded Rod, Expansion Bolt, Mining Anchor Nuts. We will give the professional answers to your questions.