Boss Fittings | McMaster-Carr

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UN/UNF (SAE Straight)

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Specifications Met

Tube OD

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Compliant with Exemptions

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

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Threading

Threaded on Both Ends

Performance

Connect Under Pressure

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Pressure Class

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7,944 Products

Fluid Handling

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

526 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

1,285 products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

81 products

Fastening and Joining

Weld Nuts

Weld to metal surfaces to add permanent threads

202 products

Threaded Inserts

Create new threads or repair stripped threads

643 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

50 products

Thread Adapters

Join threads of a different type, size, and gender

3,611 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

978 products

Heating, Ventilation, and Air Conditioning

Duct Flanges

Mount on equipment to start a run of duct, or create a secure joint between two sections

41 products

Containers, Storage, and Furniture

Metal Panels

Close off openings in structures while allowing air to pass through

253 products

Building and Machinery Hardware

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

41 products