Home / Welding Equipment / Welding Accessories / Hose Couplers/Fittings / Hose Nuts – “B” Fitting. Acetylene 9/16″ Hose Nuts – “B” Fitting. Acetylene 9/16″ $5.19 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 5 PK Oxygen-Acetylene Brass Hose Ferrules 1/4″ $6.45 Part Number: 12273Add to Cart 2 PK Oxygen-Acetylene B-Size Barbed Hose Nipples. 3/16″ ID, 1-7/16″ Length $5.49 Part Number: 12276Add to Cart 2 Pk. Hose Couplers “B” Fitting – Oxygen $6.30 Part Number: 12279Add to Cart Oxygen-Acetylene Hose Brace – 3/16″ $8.90 Part Number: 12274Add to Cart