SAME DAY SHIPPING
— Order by 2pm EST.
Toggle Nav
Cart
Search
main product photo

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

Ask A Question

Description & Features

The HK Series Industrial Interchange Series B Steel Hydraulic Quick Disconnect, Female Half, -06 Coupling, 3/8-18 Female NPT by Danfoss Power Solutions is designed for high and low pressure sealing, meeting ISO standard 7241-1 Series B specifications. Its self-sealing poppet valve design minimizes fluid loss and air inclusion, ensuring efficient fluid transfer.

Standard seal material is Buna-N, with options available in PTFE, Neoprene, FKM, EPDM, and Kalrezreg; for varied applications such as agriculture, construction, military, and aerospace.

The product features PTFE back up rings in female sockets and operates within a temperature range suitable for diverse industrial environments. The -06 coupling size and 3/8-18 NPTF threads facilitate easy and secure connections.

MPN: 3H21

Supplier Part Number: 3H21

Specifications

A
2.56
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
B
1.42
Coupling Size
-06
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13555
End Size 1
0.38
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
Seal Part if Included
90214
Supplier Part Number
3H21
Thread 1
3/8-18
Thread Sealant
No
Alternate Part Numbers
Alternate Part Number C1KZ23, Alternate Part Number MI-06098065, Alternate Part Number MINO-00015X00455, Alternate Part Number MINO-00925X10483
Product Weight
0.43 lbs

Related Documents

Similar Products

Model Number Coupling Size Thread 1 Seal Material A B Price Action
HK Series Industrial Interchange Series B Steel Hydraulic Quick Disconnect, Female Half, -02 Coupling, 1/8-27 Female NPT

1H11 HK Series Quick Disconnect

-02

1/8-27

Buna-N

1.91

0.98

HK Series Industrial Interchange Series B Steel Hydraulic Quick Disconnect, Female Half, -04 Coupling, 1/4-18 Female NPT

2H16 HK Series Quick Disconnect

-04

1/4-18

Buna-N

2.26

1.14

HK Series Industrial Interchange Series B Steel Hydraulic Quick Disconnect, Female Half, -10 Coupling, 1/2-14 Female NPT

4HP26 HK Series Quick Disconnect

-10

1/2-14

Buna-N

2.96

1.86

HK Series Industrial Interchange Series B Steel Hydraulic Quick Disconnect, Female Half, -12 Coupling, 3/4-14 Female NPT

6HP31 HK Series Quick Disconnect

-12

3/4-14

Buna-N

3.48

2.22

HK Series Industrial Interchange Series B Steel Hydraulic Quick Disconnect, Female Half, -16 Coupling, 1-11-1/2 Female NPT

8HP36 HK Series Quick Disconnect

-16

1-11-1/2

Buna-N

4.13

2.61

Product Questions & Answers (2)

Question by: Roger R on Mar 5, 2026, 11:25 AM
trying to replace a -06 female quick connect on my hydraulic line, is this the right size and thread?
Answer by: Customer Support on Mar 7, 2026, 6:56 AM
You are looking at a -06 coupling with a 3/8-18 female NPTF threaded end, and it is the female socket half in the HK Series Industrial Interchange Series B style.
Question by: Rex A on Aug 18, 2025, 1:11 PM
What kind of stuff can I hook this up to, like what industries use this fitting?
Answer by: Customer Support on Aug 20, 2025, 12:09 PM
This quick disconnect is commonly used in agriculture, construction, general industry, fluid transfer, transportation, military, law enforcement/rescue, chemical, oil and gas, consumer products, HVAC, food and beverage, trucks, aerospace, and medical applications.

Tell us what you need and we'll get back to you.

Fields marked * are required.

Pre-filled — edit if you like.