DOT Compression Union Brass 3/8"
(Pack of 5.0)

Lawson

Simplify tough jobs with our compression air connector, the versatile solution for joining pipes and tubing without soldering or welding. Designed for plumbing, HVAC, gas lines, and hydraulic applications, this connector ensures a reliable seal while saving you time and effort. Easy to install and remove with just a spanner or wrench, it eliminates the need for heat—making it safer to use in tight or heat-sensitive spaces. Durable and efficient, it’s the go-to tool professionals trust for both convenience and quality results.
• Fittings are shipped with nuts, sleeves and inserts preassembled, ready to slip onto tubing
• Meets D.O.T. FMVSS 571.106
• Temperature range: –40°F to +200°F (–40°C to +93°C)
• Exceeds pressure requirements of automotive air brake systems
• Typical applications include air brake systems, air control and gauge lines
• Used with nylon tubing (SAE J844, Type 3)
Assembly Instructions
1. Cut tubing squarely.
2. Insert tubing into fitting until bottomed on seat.
3. Tighten nut with wrench until one thread remains visible on the fitting body; or, the nut should be screwed down finger-tight, then wrench-tightened as indicated in the table (this will allow for a number of remakes).

Read More

Frequently Bought Together

DV_ZoomOriginal_P_1308.jpg

DOT Compression Elbow Male 45° Brass 3/8 x 3/8"

Item#: 84311
DV_ZoomOriginal_P_1309.jpg

DOT Compression Union Tee 1/4"

Item#: 96888
DV_ZoomOriginal_P_5235.jpg

DOT Compression Elbow Male 90° Brass 5/8 x 3/8"

Item#: 96882
DV_ZoomOriginal_I_6226.jpg

Heavy-Duty Grease Gun Hydraulic Coupler

Item#: 6226
DV_ZoomOriginal_P_10020.jpg

DOT Elbow Male 90° Brass 1/4 x 1/4-18

Item#: 57510
DV_ZoomOriginal_P_5235.jpg

DOT Compression Elbow Male 90° Brass 1/4 x 1/4"

Item#: 84283
DV_ZoomOriginal_P_5237.jpg

DOT Compression Sleeve Brass 3/8"

Item#: 84322
DV_ZoomOriginal_P_5126.jpg

Silicone Heater/Coolant Hose Clamp 11/16 to 1-1/4"

Item#: 88719
DV_ZoomOriginal_I_6207.jpg

Ball Check Grease Fitting 45°

Item#: 6207
DV_ZoomOriginal_P_5235.jpg

DOT Compression Elbow Male 90° Brass 3/8 x 1/4"

Item#: 84284
DV_ZoomOriginal_P_10029.jpg

DOT Swivel Elbow Male 360° Brass 1/4 x 1/4-18

Item#: 27202
DV_ZoomOriginal_I_11914.jpg

Quick Disconnect Coupler Steel 1/4" x 1/4-18

Item#: 11914
DV_ZoomOriginal_P_506_WB.jpg

Self-Drilling Screw Hex Head #10-16 x 3/4"

Item#: 84931
DV_ZoomOriginal_P_32662.jpg

Lock Washer Alloy Steel 3/8"

Item#: A530
DV_ZoomOriginal_P_33479.jpg

SAE J995C Locknut with Nylon Insert Grade 8 1/2-13

Item#: 53983
DV_ZoomOriginal_P_5126.jpg

Silicone Heater/Coolant Hose Clamp 9/16 to 1-1/16"

Item#: 88718
DV_ZoomOriginal_I_51879.jpg

Heat Shrink Tubing 20 to 14 AWG Black

Item#: 51879
DV_ZoomOriginal_I_1509162.jpg

High Solids Paints Semi-Gloss Black

Item#: 1509162

Product Description

Simplify tough jobs with our compression air connector, the versatile solution for joining pipes and tubing without soldering or welding. Designed for plumbing, HVAC, gas lines, and hydraulic applications, this connector ensures a reliable seal while saving you time and effort. Easy to install and remove with just a spanner or wrench, it eliminates the need for heat—making it safer to use in tight or heat-sensitive spaces. Durable and efficient, it’s the go-to tool professionals trust for both convenience and quality results.
• Fittings are shipped with nuts, sleeves and inserts preassembled, ready to slip onto tubing
• Meets D.O.T. FMVSS 571.106
• Temperature range: –40°F to +200°F (–40°C to +93°C)
• Exceeds pressure requirements of automotive air brake systems
• Typical applications include air brake systems, air control and gauge lines
• Used with nylon tubing (SAE J844, Type 3)
Assembly Instructions
1. Cut tubing squarely.
2. Insert tubing into fitting until bottomed on seat.
3. Tighten nut with wrench until one thread remains visible on the fitting body; or, the nut should be screwed down finger-tight, then wrench-tightened as indicated in the table (this will allow for a number of remakes).

Technical Specifications

Item#: 84254
Class Air Brake Ftgs/Tubing/Accessories
Fitting Type Compression - Nylon Tubing
Style DOT
Material Brass
Configuration Union
Connection Type A x B Tube x Tube
Fitting Dimension A 3/8 "
Fitting Dimension B 3/8 "
Size 3/8
UNSPSC #: 25171700
TAA Compliant: No
Weight: 0.53 lb

Product Restrictions

Your Recently Viewed Items