For drawings that call out a wrench-driven set screw, 1-8 x 1 3/4 identifies the coarse thread, length, material class, and square head geometry.
Typical applications include agricultural equipment with exposed mechanisms and field-adjusted stops. The product record carries the size; the requested point is selected from the Half Dog, Full Dog, Cone, Oval, and Flat menu. External wrench access is useful when an internal socket recess would be hard to keep clear.
Cold Headers brings long socket and set screw experience to older machine platforms where square-head hardware is still specified. Review the selected point, wrench clearance, and mating feature before substitution. Socket set screw families provide the internal-drive alternative where square-head projection or wrench swing will not clear.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.