We-re nuts about bolts. Imperial, Unified & Metric.
1/4 UNC x 1 1/2 A2 ST/ST SLOT FILLISTER HD SCREW
Product Code: SMFNC0250150
Machine threaded screws, or more simply machine screws, for use in tapped holes or with similar sized nuts. Available in many head styles and various materials.
from Kerridge Commercial Systems Ltd