The Series 550 Cosmetic Coiled Pin was designed specifically for cosmetic cases to ensure the perfect balance of strength and flexibility. The 1-1/2 coil construction ensures that the Cosmetic Coiled Pin exerts sufficient radial force to achieve the long-term desired swing torque while protecting the plastic from excessive stresses. The net result is the prolonged useful life of the assembly.
A key characteristic of a Coiled Spring Pin is that the diameter of the pin at the seam is equal to or less than the diameter adjacent to the seam. This prevents the edge of the material from contacting the inside diameter of the hole wall and prevents skiving when inserted. These factors, combined with its unique flexible design, makes the SPIROL® Series 550 Cosmetic Coiled Pin ideal for hinges in cosmetic cases.
SPIROL also offers the Model HC Pin Installation Machine designed specifically to install the Series 550 Cosmetic Coiled Spring Pins into Cosmetic Cases.
Contact us for complimentary engineering assistance for pinning your cosmetic application.
Read our White Paper on Measurement Techniques for the Inspection of Series 550 Coiled Pins for Cosmetic Cases and other White Papers for Coiled Spring Pins.
The SPIROL Model HC Pin Installation Machine was designed for the highest quality assembly of cosmetic case.