MIL-DTL-83723 Series III Jam Nut Receptacle (Bayonet, Pin, Shell 18)

Specifications

Cross-Reference

Overview

The M83723-74R18316 is a MIL-DTL-83723 Series III connector in the /74 Jam Nut Receptacle configuration, shell size 18, insert arrangement 18-31 — 31 × #20 (7.5 A each). The 83723 Series III family combines features of MIL-DTL-26500 and NAS 1599, is intermateable with both bayonet and threaded 26500 connectors (shell size 8 excepted, which is threaded-only), and carries 31 qualified insert arrangements per MIL-STD-1554 using 2 to 61 M39029 contacts in sizes 20, 16 and 12.

It uses a rear-release crimp contact retention system: a stamped beryllium-copper retaining clip captivated by moulded-in shoulders, released by a single expendable plastic insertion/removal tool. Sealing is layered — a closed-entry socket insert with lead-in chamfers, a raised interfacial pin insert seal that puts a moisture barrier around every pin, and a triple elastomer wire seal in each cavity at the rear. Alternate key/keyway positions prevent cross-mating of adjacent connectors with the same insert arrangement, which is why alternate keying codes appear as the final character of the part number.

The Electroless nickel finish is rated for the -65°C to +200°C operating range. The family resists immersion in MIL-PRF-7808 and MIL-PRF-23699 lubricating oils, MIL-PRF-5606 hydraulic fluid, JP-4, JP-5, JP-8, Coolanol 25 and SAE-AMS1424 Type I de-icing fluid. Shell-to-shell conductivity through RFI spring fingers holds potential drop to 5 mV or less, and shock is specified at a 300 G ±15% half-sine pulse over three axes with no discontinuity longer than one microsecond.

Applications

Commercial and military aerospace airframe and engine harnesses, ground-start and actuation systems, ground-support equipment, armoured-vehicle power and signal distribution, and any application that must mate with an existing MIL-DTL-26500 / NAS 1599 bayonet or threaded interface.