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HAM-LET Compression Fitting Adapter: 1/2 in OD x 3/8 in Pipe Fitting Size - Double-Ferrule Stainless Steel Fittings
HAM-LETDouble-Ferrule Stainless Steel Fittings

HAM-LET Compression Fitting Adapter: 1/2 in OD x 3/8 in Pipe Fitting Size

The HAM-LET Compression Fitting Adapter is a double-ferrule stainless steel fitting in a Tube x MNPT configuration, part of the Let-Lok series. It adapts from 1/2 in OD tube to a 3/8 in pipe fitting size (MPN 774LM…

SKU 3G-OTH-471349

Brand
HAM-LET
Item
Compression Fitting Adapter: 1/2 in OD x 3/8 in Pipe Fitting Size
Category
Double-Ferrule Stainless Steel Fittings
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Technical Specifications

HAM-LET
Manufacturer Part Number
774LM SS 1/2 X 3/8
Series
Let-Lok
Type
Tube x MNPT
Compatible Fitting Brands
Parker A-LOK
View Full Spec Sheet

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HAM-LET Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HAM-LET Compression Fitting Adapter is a double-ferrule stainless steel fitting in a Tube x MNPT configuration, part of the Let-Lok series. It adapts from 1/2 in OD tube to a 3/8 in pipe fitting size (MPN 774LM SS 1/2 X 3/8) and is compatible with Parker A-LOK fittings.

Frequently Asked Questions

What is a HAM-LET compression fitting adapter used for?

A HAM-LET compression fitting adapter connects 1/2 in OD tubing to a 3/8 in male NPT threaded port. It is used in instrumentation, hydraulic, and pneumatic systems where leak-free sealing is critical. The double-ferrule design provides reliable grip and vibration resistance in industrial fluid and gas applications.

What are the specifications of the HAM-LET 774LM SS 1/2 X 3/8?

The HAM-LET 774LM SS 1/2 X 3/8 is a double-ferrule stainless steel adapter from the Let-Lok series. It has a Tube x MNPT configuration, adapting 1/2 in OD tube to a 3/8 in pipe fitting size. It is compatible with Parker A-LOK fittings and is manufactured by HAM-LET.

Where to buy HAM-LET compression fittings worldwide?

3G Electric supplies HAM-LET compression fittings worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to source the 774LM SS 1/2 X 3/8 adapter or other Let-Lok series components for your instrumentation and fluid systems.

How to install a HAM-LET double-ferrule compression fitting?

To install a HAM-LET double-ferrule fitting, insert the tube fully into the fitting body, then tighten the nut finger-tight. Mark the nut position, then tighten an additional 1-1/4 turns for 1/2 in OD tubing. This ensures proper ferrule swaging and a leak-free seal. Always follow manufacturer torque guidelines for your specific size.

Used in

Common applications for HAM-LET
Oil and gas — HAM-LET H99 Series needle valves for instrument isolation in high-pressure lines
Chemical processing — HAM-LET H-400 Series check valves for backflow prevention in corrosive fluid systems
Semiconductor manufacturing — HAM-LET EVZS4R-BV diaphragm valves for ultra-high-purity gas distribution
Power generation — HAM-LET H-6800 Series three-way ball valves for cooling water flow switching
Analytical instrumentation — HAM-LET H300U Series metering valves for precise flow regulation in lab gas systems
Hydraulic systems — HAM-LET H-410 Series poppet check valves for load-holding in hydraulic circuits

HAM-LET Products

3G Electric supplies HAM-LET double-ferrule stainless steel fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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HAM-LET Compression Fitting Adapter: 12 mm OD x 1/4 in Pipe Fitting Size, Compression x MBSPP (MPN 768LG SS 12MMX 1/4). Key specifications — Compatible Fitting Brands: Swagelok; Brand: HAM-LET.
HAM-LET Compression Fitting Plug: 8 mm OD Fitting Size, Compression, Stainless Steel (MPN 7121L-SS-8MM). Key specifications — Series: LETLOK; Compatible Fitting Brands: Let-Lok; Brand: HAM-LET.
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HAM-LET Compression Fitting Plug: 8 mm OD Fitting Size, Compression, Stainless Steel (MPN 7121L-SS-8MM). Key specifications — Series: LETLOK; Compatible Fitting Brands: Let-Lok; Brand: HAM-LET.
HAM-LET Compression Fitting Ferrule: 5/16 in OD Fitting Size, Compression, Stainless Steel (MPN 760LF SS 5/16). Key specifications — Series: Let-Lok; Compatible Fitting Brands: Parker A-LOK; Brand: HAM-LET.
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HAM-LET Compression Fitting Ferrule: 5/16 in OD Fitting Size, Compression, Stainless Steel (MPN 760LF SS 5/16). Key specifications — Series: Let-Lok; Compatible Fitting Brands: Parker A-LOK; Brand: HAM-LET.
HAM-LET Compression Fitting Adapter: 1/4 in OD x 3/8 in Pipe Fitting Size, Tube x MNPT (MPN 739LM SS 1/4 X 3/8). Key specifications — Series: Let-Lok; Compatible Fitting Brands: Swagelok; Brand: HAM-LET.
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HAM-LET Compression Fitting Elbow: 3/8 in OD x 1/8 in Pipe Fitting Size, Compression x MNPT (MPN 769L SS 3/8 X 1/8). Key specifications — Compatible Fitting Brands: Swagelok; Brand: HAM-LET.
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HAM-LET Compression Fitting Elbow: 3/8 in OD x 1/8 in Pipe Fitting Size, Compression x MNPT (MPN 769L SS 3/8 X 1/8). Key specifications — Compatible Fitting Brands: Swagelok; Brand: HAM-LET.
HAM-LET Compression Fitting Adapter: 10 mm OD x 3/8 in Pipe Fitting Size, Compression x MBSPP (MPN 768LG SS 10MMX 3/8). Key specifications — Compatible Fitting Brands: Swagelok; Brand: HAM-LET.
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HAM-LET Compression Fitting Adapter: 8 mm OD x 1/4 in Pipe Fitting Size, Tube x MNPT (MPN 739LM SS 8 MMX 1/4). Key specifications — Compatible Fitting Brands: Swagelok; Brand: HAM-LET.
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