Kapurthala industrial corporation, ludhiana [punjab], supplies castle and slotted nuts [hex/round]. These are safety nuts used for absorbing sudden shocks and vibrations. Slots are provided for split pin locking. The available grades of castle and slotted nut [hex/round] are: astm - o, a, b, c, d, c, h, c3 and dh; bs - a, p, r, t and din/iso/is - cl, 04, 05, 4, 5, 6, 8, 10 and 12, in the range m6 to m100 or 1/4 to 4 inch as per is, bs, iss, din, iso, ifi standards or as per drawings. The company is equipped with special purpose machines [for hot/cold forging, turning, milling, grinding, tapping, threading, slotting and punching], plants [for heat treatment, zinc electro/hot dip galvanising and nickel electroplating], and chemical and mechanical laboratories.
