The 031-5: It's built for RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 cable groups — the common small-diameter coax types used in instrumentation, radio equipment, and test leads. The silver-plated beryllium copper centre contact gives good conductivity and spring retention across repeated mates.
The 500 mating cycles mean this jack holds up well in field-service or test-bench environments where cables get swapped regularly. The cable group list — RG-174, 188, 188A, 316, LMR-100, M17/119-RG174 — covers the thin, flexible coax types that fit the standard BNC crimp ferrule. If you're terminating a different cable diameter, check the outer jacket OD against the clamp range; the shield termination is a clamp style, so the braid gets captured mechanically before the centre conductor is crimped or soldered.
What Comes in the Box and How It Goes Together
The centre contact can be crimped or soldered — the choice depends on your tooling and whether you need a field-repairable joint. The braid clamp and gasket handle the weather seal and strain relief when assembled correctly.