Tube to Male SAE O-Ring Boss — N6400 Series, 316 Stainless Steel

Mid-Lok flareless twin-ferrule instrumentation fittings in 316 stainless, for instrument, sample and small-bore process tube lines.

Tube to Male SAE O-Ring Boss in 316 stainless steel, N6400 series. 2 sizes stocked, 1/4" through 1/2". Select the size you need from the dropdown — each option is a separate stocked part number.

Before you order

Twin-ferrule fittings are not cross-compatible between brands. Mid-Lok nuts and ferrules are designed to seal against Mid-Lok bodies. Mixing them with Swagelok, Parker A-LOK or other makes will compromise the seal even where the threads engage, so keep a single brand through any one joint.

Correct make-up matters: these need proper initial pull-up and, on remakes, a gap-inspection gauge. They also require tube of the correct wall thickness and hardness — they will not seal reliably on thin-wall or work-hardened tube.

Specifications

• Material: 316 stainless steel
• Configuration: Tube to Male SAE O-Ring Boss
• Series: N6400
• Product line: Mid-Lok SS Instrumentation Fittings
• Size range: 1/4" through 1/2"
• Stocked part numbers: 2

Part numbers & sizes

Ships from SupplyTie Fittings & Hydraulics. Free freight on orders of $2,000 or more. Minimum order $75.