M36 x 4mm - Hexagon Die Nuts are used for correcting damaged external threads, this can be done by hand. These dies have been manufactured by VÖLKEL, with 100 years of experience in manufacturing taps & dies, VÖLKEL has become one of the worldwide leading suppliers for threading tools.  This is not a stock item therefore please allow 1-3 working days for dispatch. As this is not kept as a stock item, this is non-returnable & non-refundable. VOLKEL - M36 x 4mm - Hexagon Die Nut