D38999/33W21R D38999/33W21R is a dust cap (cover) from Glenair for MIL-DTL-38999 Series III receptacles. It features olive aluminum construction, 1000 Hour Grey Ni-PTFE plating, and a metal chain for tethering.
Mfr Part #:

D38999/33W21R

Available from 1 distributors
Mfr Name: Glenair
Glenair
D38999/33W21R is a dust cap (cover) from Glenair for MIL-DTL-38999 Series III receptacles. It features olive aluminum construction, 1000 Hour Grey Ni-PTFE plating, and a metal chain for tethering.
Total Stock: 8 pcs

D38999/33W21R Available from 1 distributor

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
8 pcs
8 pcs On Request 1 On Request On Request On Request On Request On Request

D38999/33W21R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Accessory Type
Color
Features
For Use With
Material
Mating Cycles
Military Grade
Plating Code
RoHS Compliance
Salt Spray Resistance
Shell Size
Shell-to-Shell Millivolt Drop
Standard Package Qty
Tape & Reel
Temperature Rating

D38999/33W21R Description

Short technical summary and product information.

The Glenair D38999/33W21R is a protective dust cap designed for use with MIL-DTL-38999 Series III receptacles, shell size 21. The cap is constructed from olive aluminum with a 1000 Hour Grey nickel-PTFE (Ni-PTFE) plating (plating code MT). This advanced plating delivers outstanding corrosion resistance with 1000 hours static and 500 hours dynamic salt spray protection, while maintaining a maximum shell-to-shell millivolt drop of 2.5 mV for electrical continuity. The cap includes a metal chain for secure tethering, preventing loss during handling or storage.

 

Environmental performance includes an operating temperature range of -55°C to 175°C and support for 500+ mating cycles. The plating is cadmium-free and hexavalent chromium free, making it RoHS compliant. The non-reflective, non-magnetic olive finish is suitable for tactical military systems requiring EMC performance.

 

This dust cap is ideal for protecting connectors in land, sea, air, and space applications, ensuring longevity and reliable performance in harsh environments. It is a direct accessory for Glenair MIL-DTL-38999 Series III receptacles and is compatible with other manufacturers' similar connector systems.

D38999/33W21R Quick Information

Product Type: Dust Cap / Cover for Circular Connectors
Series: MIL-DTL-38999 Series III
Canonical Name: Glenair D38999/33W21R Olive Aluminum Dust Cap (Cover) for MIL-DTL-38999 Series III Receptacle, Shell Size 21 with Metal Chain
Subcategory: Dust Cap

D38999/33W21R Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

D38999/33W21R Features

  • Olive aluminum dust cap for MIL-DTL-38999 receptacles.
  • 1000 Hour Grey Ni-PTFE plating for corrosion resistance.
  • Includes metal chain for tethering.
  • Operates from -55°C to 175°C temperature range.
  • RoHS compliant and cadmium-free construction.

D38999/33W21R Applications

  • Protects MIL-DTL-38999 receptacle when not in use.
  • Suitable for military and aerospace interconnect systems.
  • Used in environments requiring corrosion protection.
  • Ideal for applications demanding EMC performance.

D38999/33W21R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the shell size of the D38999/33W21R dust cap?

Shell size 21.

What temperature range can this dust cap withstand?

-55°C to 175°C.

Is the D38999/33W21R dust cap RoHS compliant?

Yes, the datasheet indicates RoHS compliance.

What plating does this cap use?

1000 Hour Grey Ni-PTFE plating (plating code MT).

How many mating cycles is the cap rated for?

500+ mating cycles.

What salt spray resistance does the cap offer?

1000 hours static and 500 hours dynamic.

What material and color is the cap?

Olive aluminum.

Home
Account

Categories