ASTM A153 Hot Dip Galvanized Double Arming Bolts | Corrosion Resistant Utility Pole Hardware

CW-DAB Double Arming Bolts (D.A. Bolts)

Product Overview

CW-DAB Double Arming Bolts are fully threaded, hot-dip galvanized steel bolts​ designed for use in double crossarm construction​ on utility poles and transmission structures. Supplied pre-assembled with four square nuts, these bolts provide a secure and stable method for locking the spacing between two crossarms, ensuring structural integrity under heavy loads.

The bolt ends are threaded to accept eye nuts, making them suitable for dead-end and guy wire anchoring applications. Commonly referred to as D.A. Bolts​ or Double Arm Bolts, they are an essential component in overhead power line and substation construction.

Key Features & Benefits

• Fully Threaded Design: Allows flexible adjustment and secure locking at any position along the bolt length.

• Heavy-Duty Construction: Manufactured from high-strength carbon steel for maximum load capacity.

• Corrosion Protection: Hot-dip galvanized finish meets ASTM A153​ and ISO 1461​ standards for long-term outdoor service.

• Versatile Application: Compatible with eye nuts for dead-end terminations or guying systems.

• Pre-Assembled: Supplied with four square nuts for faster installation and reduced on-site labor.
  

Typical Applications

• Double crossarm assemblies on wooden, concrete, or steel poles

• Transmission and distribution line construction

• Substation structural framing

• Guy anchor and dead-end installations

• Industrial steel structure reinforcement

Technical Specifications

Note: Length measurements do not​ include the pointed end. Custom lengths, diameters, and finishes are available upon request.

Installation & Usage Notes

1. Pair Usage: Always install in pairs to “unitize” both crossarms for balanced load distribution.

2. Torque Recommendation: Tighten nuts to the specified torque value based on bolt diameter and application requirements.

3. Accessories: Can be used together with CW-EN Eye Nuts​ and CW-WA Washers​ for complete assembly.

4. Safety: Inspect galvanization and threads before installation; replace damaged bolts immediately.

Compliance & Standards

• Manufacturing Standard: ANSI C135 Series for Utility Hardware

• Galvanizing Standard: ASTM A153 / ISO 1461

• Mechanical Properties: ASTM A307 / ASTM A394 / GB/T 3098 (as required)