9/64 Long Arm Alloy Steel Hex Key is an L-shaped alloy steel hex key for socket-drive work where the exact 9/64 in. width matters. The ASME B18.3 width band is 0.1391-0.1406 in.; the key is held just under nominal so it enters an in-tolerance socket and bears on the flats.
Assembly benches and tool cribs use loose hex keys when individual driver sizes need restocking without a full kit. The Long Arm key is the reach-oriented member of the pair, while the Short Arm version fits compact work areas.
For industrial purchasing and maintenance teams, Cold Headers helps match width, series, and catalog identity. Review the 9/64 in. width, Long Arm format, short-leg length, and arm length before ordering. 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.
