Camozzi: 1253 3/8 BSP Locking Nut BSP Hexagon Locking Nuts - Series 1253 BSP adaptor- hexagon locking nuts. 1/8" and 1/4" threads. Can be used with rigid PA tubes. A locking nut is provided and can be tightened both manually and with a spanner. The special shape of the guiding cone ensures that the tube cannot be accidentally cut. Materials body and nut: nickel-plated brass; O-ring: NBR; thread seals: PTFE, PA, AL. Threads GAS, conical ISO 7 (BSPT) GAS, cylindrical ISO 228 (BSP). MPN: 1253 3/8 BSP Locking Nut Attributes: MFR Part No.: 1253 3/8 Material: Brass Product Type: Locking Nuts Surface Finish: Nickel-Plated Thread Size: 3/8in Thread Standard: BSPP Thread Type: Female