3/8″ Brass Countersink Plug – NPT Thread

The 1/4″ Brass Countersink Plug (Model 6AYZ8) is a compact, corrosion-resistant pipe plug designed to seal female NPT ports. Its countersunk head allows it to sit flush with the surface, making it ideal for clean, low-profile installations in softwash, pressure washing, and general plumbing applications.

Includes:

• One (1) 1/4″ brass countersink pipe plug

• Tapered NPT threads for secure sealing

• Compatible with all standard 3/8″ female NPT ports

Performance Specifications:

• Size: 3/8″ NPT (Male)

• Material: Lead-free brass

• Thread Type: Tapered NPT

• Head Type: Countersunk / Flat head

• Model Number:

• Pressure Rating: Up to 1,200 PSI (system dependent)

• Temperature Range: –65°F to 250°F

Key Benefits:

• Flush countersink head for clean, low-clearance sealing

• Durable brass construction resists corrosion, especially in chemical systems

• Tapered threads ensure leak-free sealing with minimal effort

• Ideal for softwash tanks, pumps, and manifolds

• Quick installation using hex or slotted driver (depending on head style)