M22 x 1.5 Sensor Boss (31.75mm dia) Sizes can be seen in photo's however, any questions please ask. Material is 303ss (can be welded).
COPPER SEALING WASHERS M22 X 28 X 1.5mm Sump Plug
COPPER SEALING WASHERS M22 X 27 X 1.5mm Sump Plug
Gold Plug Magnetic Stainless Steel Engine Sump Drain Plug - M22 x 1.5mm
Brass Fan Switch 88C/79C M22 x 1.5
T7Design 84-79, 88-83°c Dual Stage Universal Radiator Fan Switch M22 x 1.5
Radiator Fan Temperature Switch M22 x 1.5 Fits Ford Reliant Ci IGNITION XEFS52
