Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
PARKER Compression Fitting Union: 1/4 in OD x 1/4 in OD size, 7/16-20 x 7/16-20 Thread Size - Flareless Bite-Type Stainless Steel Compression Fittings
PARKERFlareless Bite-Type Stainless Steel Compression Fittings

PARKER Compression Fitting Union: 1/4 in OD x 1/4 in OD size, 7/16-20 x 7/16-20 Thread Size

The PARKER Compression Fitting Union is a Ferulok flareless bite-type stainless steel compression fitting, sized 1/4 in OD x 1/4 in OD with 7/16-20 x 7/16-20 thread size (MPN 4 HBU-SS). 3G Electric interprets demand…

SKU 3G-OTH-478824

Brand
PARKER
Item
Compression Fitting Union: 1/4 in OD x 1/4 in OD size, 7/16-20 x 7/16-20 Thread Size
Category
Flareless Bite-Type Stainless Steel Compression Fittings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

PARKER
Manufacturer Part Number
4 HBU-SS
Series
Ferulok
Type
Ferulok
Thread Size
7/16-20 x 7/16-20
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

PARKER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PARKER Compression Fitting Union is a Ferulok flareless bite-type stainless steel compression fitting, sized 1/4 in OD x 1/4 in OD with 7/16-20 x 7/16-20 thread size (MPN 4 HBU-SS). 3G Electric interprets demand and delivers this genuine industrial component across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is a PARKER Ferulok compression fitting union used for?

The PARKER Ferulok 4 HBU-SS compression fitting union connects two 1/4 in OD tubes in high-pressure hydraulic and instrumentation systems. Its flareless bite-type design provides a leak-proof metal-to-metal seal, ideal for industrial fluid power applications across machining, pneumatics, and hydraulics.

What are the specifications of the PARKER 4 HBU-SS compression fitting?

The PARKER 4 HBU-SS is a Ferulok series stainless steel compression fitting union. It has a 1/4 in OD x 1/4 in OD tube size and 7/16-20 x 7/16-20 thread size. The flareless bite-type design ensures reliable sealing in demanding environments. 3G Electric supplies this genuine PARKER component worldwide.

Where to buy PARKER Ferulok compression fittings in worldwide?

3G Electric sources and delivers genuine PARKER Ferulok compression fittings, including the 4 HBU-SS union, to customers worldwide. We handle full logistics and customs clearance, ensuring you receive the correct industrial component for your application. Contact us for availability and lead time.

How to install a PARKER Ferulok flareless compression fitting?

To install a PARKER Ferulok fitting, insert the tube fully into the fitting until it bottoms out, then tighten the nut finger-tight. Mark the nut position, then tighten an additional 1-1/4 turns for stainless steel tubing. Always follow manufacturer guidelines and use proper tools to avoid leaks.

Used in

Common applications for PARKER
Injection molding machine proportional directional control — Parker solenoid coils and proportional valve cartridges for mold-closing and hydraulic actuation circuits
Construction equipment hydraulic steering and boom control — Parker directional control valves with solenoid actuation for excavator and loader hydraulic systems
Industrial press forming systems — Parker pressure-relief and proportional directional valves for tonnage control and cycle sequencing
Material-handling conveyor systems — Parker proportional control valves with solenoid pilot stages for smooth load acceleration and deceleration
Tire-building machinery — Parker solenoid-actuated directional cartridges for synchronized multi-axis hydraulic positioning
Forestry and mobile equipment — Parker valve spools and solenoid assemblies rated for harsh-environment hydraulic circuits and mobile-duty pressure cycling

PARKER Products

3G Electric supplies PARKER flareless bite-type stainless steel compression fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from PARKER

View all PARKER parts →
PARKER Compression Fitting Adapter: 1/2 in OD x 3/8 in Pipe size, 3/8-18 Thread Size, Ferulok (MPN 8 GBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 1/2 in OD x 3/8 in Pipe size, 3/8-18 Thread Size, Ferulok (MPN 8 GBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Adapter: 1/2 in OD x 1/2 in Pipe size, 1/2-14 Thread Size, Ferulok (MPN 8-8 FBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 1/2 in OD x 1/2 in Pipe size, 1/2-14 Thread Size, Ferulok (MPN 8-8 FBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Adapter: 3/8 in OD x 1/4 in Pipe size, 1/4-18 Thread Size, Ferulok (MPN 6 FBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 3/8 in OD x 1/4 in Pipe size, 1/4-18 Thread Size, Ferulok (MPN 6 FBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Elbow: 1/2 in OD x 1/2 in Pipe size, 1/2-14 Thread Size, Stainless Steel (MPN 8-8 CBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Elbow: 1/2 in OD x 1/2 in Pipe size, 1/2-14 Thread Size, Stainless Steel (MPN 8-8 CBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Union: 1/2 in OD x 1/2 in OD size, 3/4-16 x 3/4-16 Thread Size, Ferulok (MPN 8 HBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Union: 1/2 in OD x 1/2 in OD size, 3/4-16 x 3/4-16 Thread Size, Ferulok (MPN 8 HBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Adapter: 1/4 in OD x 1/4 in Pipe size, 1/2-20 Thread Size, Ferulok (MPN 4-5 F5BU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 1/4 in OD x 1/4 in Pipe size, 1/2-20 Thread Size, Ferulok (MPN 4-5 F5BU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Elbow: 1 in OD x 1 in OD size, 1 5/16-12 x 1-5/16-12 Thread Size, Ferulok (MPN 16 EBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Elbow: 1 in OD x 1 in OD size, 1 5/16-12 x 1-5/16-12 Thread Size, Ferulok (MPN 16 EBU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER Compression Fitting Adapter: 1/2 in OD x 1/2 in Pipe size, 3/4-16 Thread Size, Ferulok (MPN 8 F5BU-SS). Key specifications — Series: Ferulok; Brand: PARKER.
PARKER
PARKER Compression Fitting Adapter: 1/2 in OD x 1/2 in Pipe size, 3/4-16 Thread Size, Ferulok (MPN 8 F5BU-SS). Key specifications — Series: Ferulok; Brand: PARKER.