aluminum 4-bolt double cross arm

4-Bolt Base

4 bolt double cross arm catalog page

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Details

RTA Double Cross Arm 4-Bolt Pole Specifications

Pole

The pole shaft will be constructed of seamless extruded tube of 6063 Aluminum Alloy per the requirements of ASTM B221. The shaft assembly shall be full-length heat treated after base weld to produce a T6 temper.

Base Style

4-Bolt Cast Aluminum Base Flange of Alloy 356-T6 with Aluminum Bolt Covers (Alloy 356-F) and Stainless Steel Hex Head Attaching Screws.

 

Handhole

6″ Butt Diameter – Reinforced, 3″ x 5″ curved Cast Aluminum Frame (Alloy 356-T6) with Aluminum Door and two (2) SS Hex Head Screws. A Grounding Provision incorporating a 3/8″ diameter hole is provided opposite the Handhole.

7″+ Butt Diameters – Reinforced, 4″ x 6″ curved Cast Aluminum Frame (Alloy 356-T6) with Aluminum Door and two (2) SS Hex Head Screws. Reinforced Frame will contain a tapped 3/8″-16NC Grounding Provision.

Anchorage

Anchorage Kit will include four (4) L-shaped Steel Anchor Bolts conforming to AASHTO M314-90 Grade 55. Ten inches (10″) of threaded end will be galvanized per ASTM A153. Kits will contain four (4) Hex Nuts, four (4) Lock Washers, and four (4) Flat Washers (all components Galvanized Steel). A bolt circle template will be provided.

Base and Anchorage Details
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Vibration Damper

When determined necessary by Hapco, a Vibration Damper will be factory-installed inside the pole shaft. Customer specification of the damper is available.

Vibration Dampers
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Satin Aluminum Finish

Pole surface will contain a uniform Brushed Aluminum natural finish. Finish to be achieved utilizing specially formulated abrasives in a multi-pass, rotary sanding operation.

Powder Coat Finish

Coating material will be a thermosetting polyester AAMA 2604 Super Durable powder electrostatically applied, oven cured and bonded in a closed loop, automated system. Minimum thickness of finish will be two (2) mils. Hapco’s Powder Coat Finish Warranty on aluminum poles is five (5) years.

Finish Options
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Pole Shaft Warranty

Hapco warrants its aluminum pole assemblies for their lifetime to be free of defects in material and workmanship.

Hapco Lifetime Pole Assembly Warranty
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Specification Drawings – RTA Double Cross Arm 4-Bolt Base

Click on the Product No. to download interactive PDF specification drawing.

Pole HeightProduct No.Butt DiaWall
20′RTA20C6B4F20-**6″0.156”
RTA20D6B4F20-**6″0.188”
RTA20C7B4F20-**7″0.156”
RTA20D7B4F20-**7″0.188”
RTA20D8B4F20-**8″0.188”
25′RTA25D6B4F20-**6″0.188”
RTA25C7B4F20-**7″0.156”
RTA25D7B4F20-**7″0.188”
RTA25C8B4F20-**8″0.156”
RTA25D8B4F20-**8″0.188”
RTA25E8B4F20-**8″0.219”
RTA25F8B4F20-**8″0.250”
30′RTA30D7B4F20-**7″0.188”
RTA30C8B4F20-**8″0.156”
RTA30D8B4F20-**8″0.188”
RTA30E8B4F20-**8″0.219”
RTA30F8B4F20-**8″0.250”
RTA30D1C4F20-**10″0.188”
RTA30E1C4F20-**10″0.219”
RTA30F1C4F20-**10″0.250”
35′RTA35D8B4F20-**8″0.188”
RTA35E8B4F20-**8″0.219”
RTA35F8B4F20-**8″0.250”
RTA35D1C4F20-**10″0.188”
RTA35E1C4F20-**10″0.219”
RTA35F1C4F20-**10″0.250”
40′RTA40D8B4F20-**8″0.188”
RTA40E8B4F20-**8″0.219”
RTA40F8B4F20-**8″0.250”
RTA40D1C4F20-**10″0.188”
RTA40E1C4F20-**10″0.219”
RTA40F1C4F20-**10″0.250”
RTA40G1C4F20-**10″0.312”
45′RTA45D1C4F20-**10″0.188”
RTA45E1C4F20-**10″0.219”
RTA45F1C4F20-**10″0.250”
RTA45G1C4F20-**10″0.312”
RTA45F2C4F20-**12″0.250”
RTA45G2C4F20-**12″0.312”
RTA45H2C4F20-**12″0.375”