

Tenon adapter
Steps a round or square pole top down to a 2-3/8ā³ (ATA2) or 3ā³ (ATA3) OD tenon.
- Tenon / body
- 4.0ā³ / 6.3ā³
- Fits
- 3ā³ā5ā³ round, 4ā³ā5ā³ square
- Finish
- Color matching options
Made-to-order aluminum. Built around your project.
Bring the pole, tenon, and fixture together. Wisconsin-made aluminum adapters give you practical mounting options, a coordinated finish, and factory support to get the details right.
For lead times, call 866-308-9455.

Fixture slips onto a tenon? Use a tenon adapter. Fixture bolts to the pole? Use a drill adapter.


Steps a round or square pole top down to a 2-3/8ā³ (ATA2) or 3ā³ (ATA3) OD tenon.

Slips over a tenon and adds one to four drilled fixture mounts at 90°, 120° or 180°.

The same drill options as the round adapter, in a 4ā³ square body.
Every connection is part of the complete lighting system. NAFCOĀ® mounting accessories pair quality materials with the flexibility to meet your project's requirements.
Fabricated from seamless extruded aluminum and heat-treated to T6 temper after bending, welding, and machining.
High-grade stainless steel hardware for strength and corrosion resistance.
Architectural-grade powder coat and painted finishes, brushed and anodized options, plus custom matching to RAL and architectural colors.
Designed, engineered, and manufactured in Wisconsin, USA. Meets applicable Buy American Act and Build America, Buy America Act (BABAA) requirements.
Pick the options, copy the part number, and add it to your quote request.
Need something custom? Any position can be C for custom. Describe it in your quote request.
| Adapter | Size | Fits |
|---|---|---|
| Tenon adapter (ATA2, ATA3) | 4.0ā³ tenon on a 6.3ā³ body | Round 3ā³, 3.5ā³, 4ā³, 4.5ā³, 5ā³ OD or square 4ā³, 5ā³ pole/tenon. External fit. |
| Round drill adapter (ADAR) | 10.50ā³ tall, Ć4.00ā³ | 2-3/8ā³ or 3ā³ OD tenon, 3ā³ā4ā³ long. External fit. |
| Square drill adapter (ADAS) | 10.50ā³ tall, 4.00ā³ square | 2-3/8ā³ or 3ā³ OD tenon, 3ā³ā4ā³ long. External fit. |
Fixtures on NAFCO® brackets and arms: up to 2.0 ft² EPA and 50 lb each, at 40 ft above grade and 100 mph. The combined EPA and weight of everything on the pole must stay within the pole's ratings. Confirm selection with the project's specifying engineer.
Tell us about the pole, tenon, and fixture. Our factory team will help with fit, finish, and pricing.
Prefer to talk? Call 866-308-9455 or email quotes@willbrands.com.