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HK Series Industrial Interchange Series B Stainless Steel Hydraulic Quick Disconnect, Male Half, -06 Coupling, 3/8-18 Female NPT

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Description & Features

The HK Series Industrial Interchange Series B Stainless Steel Hydraulic Quick Disconnect is designed for high performance in demanding applications such as agriculture hydraulic tools general industry construction transportation military and more. Featuring a stainless steel construction it ensures enhanced corrosion resistance and compatibility with various fluids.

With an industrial interchange coupling conforming dimensionally to ISO standard 7241/1 Series B this quick disconnect offers a self-sealing poppet valve design ensuring efficient sealing under both high and low pressure. The PUSH-PULL ball latch design facilitates easy and quick hose connections making it ideal for fluid transfer and other industrial uses.

The coupling includes a standard Buna-N seal material providing reliable performance in temperatures ranging from -40F to +250F. It has a male push-to-connect end and a female NPTF thread making it versatile for different hydraulic setups. The minimal fluid loss and air inclusion further assure operational efficiency.

Supplier Part Number: LL3K21

Specifications

A
1.76
Air Inclusion Max
2.90 Cubic_centimeter
Application
Agriculture, Hydraulic Tool, General Industry, Construction, Fluid Transfer, Transportation, Military, Law Enforcement/Rescue, Chemical, Oil and Gas, Consumer Products, HVAC, Food and Beverage, Trucks, Aerospace, Medical
Coupling Size
-06
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Size 2
0.38
End Type 1
Push to Connect
End Type 2
NPTF
Fluid Loss
2.10 Cubic_centimeter
Minimum Working Temperature
-40
Safety locking Mechanism
None
Seal Material
Buna-N
Supplier Part Number
LL3K21
Thread 1
3/8-18
Thread Sealant
No
Alternate Part Numbers
Alternate Part Number C1KY65, Alternate Part Number MI-00285640, Alternate Part Number MINO-00402F32490
Product Weight
0.14 lbs

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Product Questions & Answers (3)

Question by: Judy C on Nov 1, 2025, 8:17 PM
got a -06 line and need a stainless quick connect plug, is this the male half with 3/8-18 female nptf threads?
Answer by: Customer Support on Nov 3, 2025, 5:26 PM
This one is the HK Series Industrial Interchange Series B male half in -06 size, and the threaded end is 3/8-18 female NPTF. The other end is a male push-to-connect style for the mating quick disconnect.
Question by: Brent P on Feb 10, 2026, 6:48 PM
Is this the right size for a 3/8 NPT connection? Just wanna make sure before I order.
Answer by: Customer Support on Feb 12, 2026, 3:12 PM
this quick disconnect has a 3/8-18 female NPT thread, so it should fit your connection perfectly.
Question by: Rod M on Apr 14, 2025, 8:10 AM
Got a setup running 3/8 female NPT ports, this plug gonna thread right in without adapters or anything extra?
Answer by: Customer Support on Apr 15, 2025, 9:50 PM
threads straight in. The female end on this coupling is 3/8-18 NPTF, so it mates directly with a 3/8 female NPT port on your equipment. No adapters needed for that configuration. Just make sure your mating half is a Series B Industrial Interchange male socket, since that's what this plug is built to connect with.