All-purpose polyamide (nylon) straps are convenient, quick and economical all-purpose fasteners. Straps are fixed reliably with the help of one-way latch mechanism (nondetachable type). Straps are made of polyamide 66 (nylon), which is noted for its high strength, elasticity, heat resistance, shock resistance, resistance to oil products, lubricants, organic solvents, etc. and possesses high electrical insulating properties.