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 Cerablanket, Ceramic Wool Refractory, 1×24 inch DUKAST 2500B DUKAST 3000B Ceramic Rollboard Paper, 1/8 x 51 inch