Dixon Boss Stainless Steel 4 Bolt Type Clamp: 2 Gripping Fingers

Boss couplings supply a convenient threaded fitting to connect two lengths of hose, or a single length to a male or female threaded (NPT) outlet.

Boss couplings are all-purpose hose couplings, universally recommended for steam hose connections. They are also widely used for air, water, fluid petroleum, chemicals and liquid petroleum gas up to 1" ID. Boss couplings can be applied to many types of rubber, synthetic, plastic, metallic or semi-metallic hose.

The bolts used in the Boss interlocking system are not standard bolts in their length, diameter, overall thread length and material hardness.  These bolts can be retorqued, but it is not recommended that the bolts or clamps be reused, as they are designed for a single bend only.  Dixon recommends using only factory supplied replacement bolts. 

Torque values for the clamps are based on dry bolts.  The use of lubricant on bolts will adversely affect clamp performance.  Do not lubricate nuts and bolts.