annalex bute limited, fastener and fixing distribution, proudly serving the east midlands for over 25 years email us at

Our extensive socket screw range includes all of the head and thread forms listed below.

- Cap (grade 12.9) METRIC std coarse/fine Din 912,
UNC/UNF 1936 series BS2470, BSW/BSF/BA BS2470

Metric low head cap Din 7984 grade 10.9

- Csk (grade 10.9), Metric Din 7991, Imperial threads BS 2470

- Button (grade 10.9) Metric ISO 7380, Imperial threads BS2470

Metric button flange grade (10.9) Din 267

- Skt set (grade 45H) Metric Cup (Din916), Dog (Din915), Cone (Din914), Flat (Din913)

In addition to our standard high tensile carbon steel range, we stock socket caps, csk, button and sets in stainless steel, grades A2 & A4

We also supply hexagon wrenches and tools for the installation of socket screws