Knurled Brass Threaded Insert – 3/8″ x 16 TPI – 5 Piece

Achieve strong, secure mounting for your custom bottle stoppers with this 5-piece set of Knurled Brass Threaded Inserts. Designed for use with stainless steel bottle stopper hardware, each insert features crisp 3/8″ x 16 TPI threading and a knurled exterior that provides superior grip inside your turned wooden or acrylic blank. These inserts ensure a dependable, long-lasting hold—essential for bottle stoppers that will be used frequently. Whether you’re turning gifts, stocking craft show inventory, or producing premium stopper designs, these inserts deliver the strength and reliability needed for professional results. Features: Made in the USA Precision-machined knurled brass inserts Knurling aids in adhesion in turning blank Perfectly fits in a 1/2″ hole Specifications: Measurements: 1/2″ diameter x 5/8″ long with 3/8″ x 16 TPI Material: Brass What’s Included: (5) Stainless Bottle Stoppers Knurled Brass Threaded Inserts – 3/8″ x 16 TPI Note: For use with Stainless Steel Bottle Stopper Turning Kits (Cone-Tip #189591, Hourglass Stand-Up #189592, Teardrop #189593, and Cone Stand-Up #189594) as well as the Stand-Up Bottle Opener Turning Kit (#170864). To install inserts, you will need a 1/2″ brad-point bit and 5-minute epoxy, all sold separately. Inserts are 1/2″ diameter x 5/8″ long with 3/8″ x 16 TPI.