Electrical: Mechanical: 5289 [ ] +0.08 .263+.003 -.000 6.68-0.00 Recommended Mounting Hole 5290 [ ] +0.25 ø.277+.010 -.000 7.04-0.00 .156 [3.96] MAX. PANEL THICKNESS .062 [1.57] 3/8" HEX 10mm HEX * O-RING .386±.020 [9.80±0.51] .886±.020 [22.50±0.51]