MIL-DTL-38999 Series III

Since 1967 HIRELCO® has been designing and manufacturing highly reliable, hermetically sealed connectors for interconnect applications. HIRELCO® designs and manufactures connectors to exceed customer expectations, by utilizing a full in-house production facility to ensure products are produced at the highest quality. Our committed Design/ Engineering team is ready to provide a quality solution for your interconnect application.

Features & Benefits

  • Defense Approved
  • High Density
  • Scoop Proof Design; Prevents damage to pin contacts
  • Up to 128 contacts per connector


Mechanical Specs

Application / Market: Aerospace, Defense
Industry / MIL-SPEC # MIL-DTL-38999 (Series III)
Shape: Circular
Shell Style: Wall mount receptacle, Jam nut receptacle, Straight Plug, Grounded
Durability: 500 Mating Cycles
Contact Style / Termination: Crimp, PCB, Eyelet, Solder Cup
Salt Spray: Up to 500 hours

Material Specs

Shell: Aluminum, Stainless Steel
Shell Plating: Passivated Stainless Steel, Tin, Zinc Nickel, Nickel-Teflon, Electroless Nickel, Electrodeposited Nickel, Electrodeposited Aluminum, Cadmium
Insulator: Thermoplastic
Contacts: Copper Alloy, Beryllium Copper, K-Series Thermocouples
Contact Plating: Gold, Tin-Lead
Grommet and Seals: Fluorosilicone

Electrical Specs

Current Rating: Up to 23 amps
Number of Signal Contacts (min/max): 3 to 128 per MIl-STD-1560
Gauge Wire Size: 12 to 28 AWG

Environment Specs

Operating Temperature: Class M,T,W,Z = +175C, All others up to +200C

"Our Job is to Create Your Vision. We can design
Any Custom Solution for Your application."

- HIREL Connectors Inc. -