1/8-Inch Stereo Panel-Mount Phone Jack - RadioShack 1/8-Inch Stereo Panel-Mount Phone Jack. Catalog #: 2740246. $2. Sold-out Online. Request notification Find a store. Tweet. This enclosed, closed-circuit mounts on your PC board and accepts 1/8" stereo jacks. Parts Warranty: 90 Days. Equivalent Part Numbers: 2740246Brand: RadioShackPrice: $2.5 Amazon Best Sellers: Best Stereo 1/4-inch & 1/8-inch Jack Discover the best Stereo 1/4-inch & 1/8-inch Jack Cables in Best Sellers. Find the top 100 most popular items in Amazon Electronics Best Sellers.