NSSS - Home. Non-Standard Socket Screw Ltd. One of the largest stockists of Standard and Non-Standard Socket Screws and associated products in Europe. screw, screws, socket, sockets, socket screw, socket screws, special, fasteners, fastenings, bolt, standard, non-standard, fastening, fastenings, bolt, bolts, standard socket screw, standard socket screws, non-standard socket screw, non-standard socket screws, non standard socket screw, non standard socket screws, manufacturer, distributor, socket screw manufacturer, socket screw distributor, unbrako, holo-krome, nsss, special, SCREW, SCREWS, SOCKET, SOCKETS, SOCKET SCREW, SOCKET SCREWS, SPECIAL, FASTENERS, FASTENINGS, BOLT, STANDARD, NON-STANDARD, FASTENING, FASTENINGS, BOLT, BOLTS, STANDARD SOCKET SCREW, STANDARD SOCKET SCREWS, NON-STANDARD SOCKET SCREW, NON-STANDARD SOCKET SCREWS, NON STANDARD SOCKET SCREW, NON STANDARD SOCKET SCREWS, MANUFACTURER, DISTRIBUTOR, SOCKET SCREW MANUFACTURER, SOCKET SCREW DISTRIBUTOR, UNBRAKO, HOLO-KROME, NSSS, SPECIAL, Screw, Screws, Socket, Sockets, Socket Screw, Socket Screws, Special, Fasteners, Fastenings, Bolt, Standard, Non-Standard, Fastening, Fastenings, Bolt, Bolts, Standard Socket Screw, Standard Socket Screws, Non-Standard Socket Screw, Non-Standard Socket Screws, Non Standard Socket Screw, Non Standard Socket Screws, Manufacturer, Distributor, Socket Screw Manufacturer, Socket Screw Distributor, Unbrako, Holo-Krome, Nsss, Special If it's standard, we stock it, if it’s special, we stock it anyway! We manufacture and distribute standard and specialist screws, fastenings and associated products for companies worldwide. NSSS Ltd are the main distributors of Unbrako and Holo-Krome. We can also produce specialist parts to complement the Socket Screw range.