Home / Welding Equipment / Welding Accessories / Hose Couplers/Fittings / Hose Nuts – “B” Fitting. Acetylene 9/16″ Hose Nuts – “B” Fitting. Acetylene 9/16″ $3.20 Part Number: 12287 Hose Nuts-“B” Acetylene 9/16″ 2 pcs. Hose Nuts - "B" Fitting. Acetylene 9/16" quantity Add to cart UPC: 682488122872 Category: Hose Couplers/Fittings Tag: B Fitting Acetylene 9/16" Related products LIMITED STOCK! – 9/16″ – 18 Male x 3/8″ – 24 LH Female Brass Acetylene/Fuel Gas Hose Adapter $5.07 Part Number: 12294Add to Cart 5 PK Oxygen-Acetylene Brass Hose Ferrules 1/4″ $6.37 Part Number: 12273Add to Cart 2 Pk. Hose Couplers “B” Fitting – Acetylene $5.47 Part Number: 12278Add to Cart Oxygen-Acetylene Hose Splicers. 1/4″ $5.52 Part Number: 12281Add to Cart