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Gray Senco A20 pneumatic nailer, aluminum body, 3/8 inch NPT inlet

Senco

Senco A20 Air Nailer Gray 3/8 in NPT Aluminum

SKU CH-4KY0-R0S3Q

Air-powered nailer drives 2 in to 7 in round-head nails at 50 to 125 psi with a 3/8 in NPT inlet

  • Air-powered convenience with 3 scfm consumption
  • Operates at 50 to 125 psi air pressure range
  • Accepts 2 in to 7 in full-round head nails
  • Handles .113 in to .148 in shank diameters
  • 3/8 in NPT inlet for standard hose connection

Air-powered nailer for framing and sheathing

The Senco A20 is an air-powered nail gun built for driving full-round-head nails from 2 in to 7 in length. It accepts 8d and 12d penny sizes with shank diameters between .113 in and .148 in. The tool operates on compressed air at 50 to 125 psi and consumes 3 scfm during use.

Aluminum body with top exhaust and 3/8 in NPT inlet

The aluminum housing keeps weight down while the top-mounted exhaust directs air away from the work surface. A 3/8 in NPT air inlet and a minimum 3/8 in hose size provide a secure connection to the supply line. Bump-fire mode allows rapid placement without a sequential trigger pull.

Verify compressor output

Confirm your compressor can deliver at least 50 psi and up to 125 psi at the tool with sufficient flow for 3 scfm consumption. Ensure the nails you plan to use match the 2 in to 7 in length range, full round head style, and .113 in to .148 in shank diameter. The nailer has no depth adjustment, so sinking depth is controlled solely by air pressure.

How it compares

Measured against everything we stock in Hydraulic Fluids, Parts & Sensors, at today’s prices. Recalculated every night.

Price $81.99
Pricier than about 62% of the 128 comparable items (median $37.49).

Specifications

Product
Brand nameSENCO

Questions about this item

What does the 3/8 in NPT air inlet mean for compressor compatibility?

The 3/8 in NPT inlet requires a matching coupler and a minimum 3/8 in hose to deliver up to 3 scfm at 50 to 125 psi.

What nail dimensions must I buy for the Senco A20?

Use full-round-head nails 2 in to 7 in long, 8d or 12d penny size, with a shank diameter between .113 in and .148 in.

How do I set the operating pressure and avoid the common setup error?

Connect air, then adjust the regulator to 50–125 psi; the frequent mistake is running the tool below 50 psi, which prevents full driving power.

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