Splined Shafting & Couplings SPLINED SHAFT FULL SPLINED SHAFT PART No. DESCRIPTION SPLINE SIZE LENGTH B283 Splined shafting 1045 carbon steel 1 3/8" dia x 6 spline 10" (250mm) B6283 29 1/2" (750mm) B7283 9.8ft (3 mtrs) B2657 1 3/8" dia x 21 spline 10" (250mm) B7657 1 3/4 dia x 20 spline 10" (250mm) B9657 1 3/4 dia x 20 spline 39" (1000mm) B8283 Heat treated high tensile grade 8 1 3/8" dia x 6 spline 10" (250mm) B8657 1 3/4" dia x 20 spline 10" (250mm) SPLINED SHAFT - PLAIN CENTRE PART No. DESCRIPTION SPLINE SIZE LENGTH B8284 Plain Centre Splined shafting Heat treated high tensile 1 3/8" dia x 6 spline 10" (250mm) B8658 1 3/4" dia x 20 spline SHAFT COUPLINGS PART No. DESCRIPTION O.D. SPLINE SIZE LENGTH B287 Splined sleeve 1045 carbon steel 2 1/8 " (54mm) 1 3/8" x 6 spline 3 1/4" (82mm) B7287 6" (150mm) B2418 2 1/8 " (54mm) 1 3/8" x 21 spline 6" (150mm) B6418   1 3/4" x 20 spline 6" (150mm) B8287 Heat treated high tensile grade 8 2 1/8 " (54mm) 1 3/8 x 6 spline 6" (150mm) B9418 3" (75mm) 1 3/4" x 20 spline Heavy wall 6" (150mm)