7/64 Long Arm Alloy Steel Hex Key is part of the driver shelf that supports cap screws, set screws, shoulder screws, and pipe plugs. The ASME B18.3 width band is 0.1079-0.1094 in.; the key is held just under nominal so it enters an in-tolerance socket and bears on the flats.
Equipment installation crews use individual keys to support field setup, access panels, and machine leveling work. Long Arm geometry adds reach and leverage; the same width in Short Arm form is the natural compact comparison.
Since 1962, Cold Headers has supplied specialty socket hardware and the hex keys that complete the working system. Review the 7/64 in. width, Long Arm format, short-leg length, and arm length before ordering. Non-catalog hex-key widths and series can be reviewed when a tool crib needs a special driver. The listed B and C ranges keep the tool geometry tied to this exact catalog row.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
