Fig. 1 BNC Amphenol® BNC 50 ohm Bulkhead Adapters Fig. 2 .510(13.0) .510(13.0) .475(12.1) .475(12.1) Y Y c c b b a a e max. panel BNC BNC Bulkhead Adapters - Jack/Jack 4525 31-220G-RFX 31-220H 31-220N 31-220N-RFX 31-3220 e max. panel BNC Isolated Bulkhead Adapters Jack-Jack 31-4803 31-4803-1101 31-4803-RFX BNC BULKHEAD ADAPTERS Description Sealed, 50 PSI Gasketed Non-sealed Isolated from Panel Dimensions, inches (millimeters) b c e .687(17.45) .683(17.3) .187(4.8) Notes Plt. Ins. P1 D1 Jack-Jack a 1.40(35.6) Jack-Jack 1.53(38.9) .688(17.5) .672(17.0) .281(7.1) P4 Jack-Jack 1.56(39.6) .689(17.5) .681(17.3) .295(7.5) Jack-Jack 1.40(35.6) .800(20.3) .659(16.7) .160(4.1) 1.40(35.6) .800(20.3) .664(16.9) 1.28(32.5) .610(15.5) 1.28(32.5) Jack-Jack Jack-Jack Mtg. Hole Military Number Amphenol Number Fig. Y UG-492A/U 31-220H *‡ 1 D1 Y UG-492D/U 31-3220* 1 P7 D23 Y — 31-220G-RFX 1 P1 D1 Y — 4525* 1 .187(4.8) P1 D1 Y — 31-220N 1 .492(12.5) .216(5.5) P7 D23 Y — 31-220N-RFX 1 .625(15.9) .460(11.7) .187(4.8) P1 D12 Y — 31-4803 2 1.28(32.5) .625(15.9) .460(11.7) .187(4.8) P15 D12 Y — 31-4803-1101 2 1.28(32.5) .625(15.9) .460(11.7) .187(4.8) P15 D12 Y — 31-4803-RFX 2 * recognized under the component program of U.L, Inc. ▲ distributor stocked ‡ IBM 5252764 Amphenol Corporation Tel: 800-627-7100 www.amphenolrf.com 121 ▲ ▲ ▲ ▲ ▲ ▲ ▲