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Ten brass hex caps for 5/16 inch tube, 1/2-24UNS thread

BFKK

BFKK 5/16" Brass Compression Stop Valve Cap 10Pcs HVAC Control

SKU CH-8VHP-GMM9F

Ten brass compression caps seal 5/16-inch tubing in air, water, fuel or gas lines

  • Corrosion-resistant brass construction ensures long-lasting durability
  • Precise 1/2-24UNS threads provide reliable leak-free sealing
  • Hexagon design allows quick installation with a standard wrench
  • Pack of 10 caps covers multiple connection points
  • Fits 5/16 inch OD tubing for versatile HVAC applications

Brass Compression Stop Valve Cap

These brass compression caps seal 5/16 inch OD tubing with a 1/2-24UNS thread. The pack contains ten pieces for HVAC, plumbing, fuel, water, air or gas lines. Hexagon design allows easy installation and removal with a wrench. Corrosion-resistant brass construction suits indoor and outdoor use.

Replaces worn or missing flare caps

Upgrade when existing caps leak, corrode or strip during service. The precise thread restores a reliable seal on air conditioners, water heaters, washing machines or garden lines. Worth the change whenever a fitting shows seepage or thread damage. Ten-piece pack covers multiple points in one order.

Check thread size and tube OD before ordering

Verify the connection uses 1/2-24UNS threads and 5/16 inch outside diameter tubing. Do not over-tighten during installation to avoid fitting damage. Ensure the hex width of 14.88mm matches your wrench. Confirm the application pressure and media are compatible with brass.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $30.99
Cheaper than about 61% of the 1,762 comparable items (median $45.99).

Specifications

No published specifications for this item yet.

Questions about this item

What size tubing and thread does the 5/16" brass compression cap fit?

The cap fits 5/16 inch OD tube and uses a 1/2-24UNS thread for sealing.

How do I install the hex compression cap without damaging the fitting?

Screw the cap into the threaded pipe and tighten with a wrench on the 0.59 inch hex; avoid over-tightening to prevent leaks.

When should I replace these brass compression caps in an HVAC system?

Replace caps if corrosion appears, threads strip, or leakage occurs at the 1/2-24UNS connection during pressure checks.

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