Home / Shop / Refractory / Insulation Pin Connector Insulation Pin Connector SKU: 10001266 Category: Refractory Tags: Needle, Rebar Description Description This is a square, self locking washer at is used to secure ceramic fabric refractory to steel plate. Contact info@arcticboilers.com for pricing Related products Uni-Bond Mortar RibTec, Refractory Reinforcement Stainless Steel Needles, 1 inch DUKAST 2500B Ceramic Rope