Ferroxcube EP cores and accessories EP17 MOUNTING PARTS General data ITEM REMARKS FIGURE TYPE NUMBER Clasp copper-nickel-zinc alloy (nickel silver) 3 CLA-EP17 Spring copper-nickel-zinc alloy (nickel silver) 4 SPR-EP17 19.6 handbook, halfpage handbook, halfpage 5 4.4 19.2 9 0.4 TYP 5 15.6 16.8 1 18.4 9 Dimensions in mm. Fig.3 Mounting clasp CLA-EP17. CBW621 CBW620 Dimensions in mm. Fig.4 Mounting spring SPR-EP17.