DIN 3852-21 BSPP port O-ring seal Dimension

DIN 3852-21 pdf standard explained stud ends and ports of fittings, manifold, valves and plug screws; It guide workshop to machine as per the required dimensions for BSPP thread chart according to DIN EN ISO 228-1, and to choose the correct size of O-ring sealing.

Dimensions of BSPP thread size from G1/4” to G1” port

Dimensions of O-rings (same to DIN EN ISO 1179-4)

Working temperature minial is  -20°C, maximal is +100°C. with working rating pressure value as follow:

The related Types of Tube end connection to BSPP E stud fittings as follow:

ISO 8434-1 24 degree cone tube end

ISO 8434-2 37 degree flare tube end

ISO 8434-3 O ring face sealing tube end

ISO 8434-6 BSPP 60 degree cone tube end

Oil port screw Plug