Hydraulic Fitting, 1/4"X3/8" Male Boss

The 4G-6MB Hydraulic Fitting is a male boss hydraulic fitting built for secure hose assemblies, pairing a 1/4" hose ID with a 3/8" nominal fitting size. Designed around the MegaCrimp® concept, it uses an internal “C” insert to help distribute crimping forces evenly and create a strong, concentric seal—so the fitting is doing the holding, not your optimism.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 4G-6MB
• Product Type: Hydraulic fitting (Male Boss)
• Hose ID 1: 1/4 in
• Fitting Nominal Size: 3/8 in
• Thread Size 1: 9/16"-18
• Thread Pitch: 18
• Length: 2.05 in
• Cutoff Length: 1.02 in
• Stem Hex Size: 11/16 in
• Coupling Design Detail: MegaCrimp® style with internal “C” insert for even crimp-force distribution and a concentric seal

Ideal For

• Building hydraulic hose assemblies using 1/4" hose ID with a male boss connection
• Repairs where you need consistent sealing and a robust crimp interface
• Shops looking to simplify hose-end inventory by using couplings designed to accommodate varying hose constructions and wall thicknesses