The tucker connection is a cast pole line fitting used to terminate and secure guy strand at the pole in an overhead line guying system. In classic North American distribution construction, the tucker connection provides the mechanical interface between the guy wire or guy strand assembly and the anchor rod or pole-mounted hardware, transmitting the full guying load into the supporting structure. Cast in ductile iron to ASTM A536, the fitting offers higher strength and better shock resistance than grey cast iron equivalents, which is why many utilities continue to specify ductile iron for all load-bearing guy attachments.
The core purpose of the tucker connection is simple but critical: it must hold the guy under sustained tension for decades, outdoors, through temperature cycles, vibration, and occasional overload events. A well-designed casting achieves this through generous section thickness at the load path, smooth radii to avoid stress concentration, and a hot-dip galvanized finish that protects the steel-family casting from corrosion. Because we produce these parts by sand casting directly from drawings or samples, we can reproduce legacy tucker connection patterns that are no longer available from the original suppliers—an important service for utilities maintaining older lines and for distributors serving the replacement hardware market.
| Parameter | Typical Value |
|---|---|
| Material | Ductile iron ASTM A536 (65-45-12 / 80-55-06) or EN-GJS-450-10 |
| Rated Load | 8,000–20,000 lbs (36–89 kN), rated to match guy strand class |
| Hole Diameter & Spacing | 13/16" (20.6 mm) main holes; spacing per pattern, typically 1-1/2"–4" |
| Bolt Size | 5/8" (16 mm) or 3/4" (19 mm) machine bolt |
| Finish | Hot-dip galvanized per ASTM A153 |
| Suitable Guy Wire Size | 3/8"–1/2" EHS guy strand |
| Weight Range | 1.0–4.0 kg per piece |
| Casting Process | Green sand casting, machined bearing surfaces |
On wood distribution poles, the tucker connection is bolted to the pole face on the guy side, positioned so the guy lead leaves the pole at the designed angle without contacting the pole edge. Installers should verify that the bolt hole aligns with the pole centerline and use square washers under the nut to distribute load. On concrete poles, dedicated inserts or through-bolts with anchoring plates are used; we can supply matching washer sets on request.
This fitting is commonly installed alongside a guy hook attachment or a pole eye plate guy attachment when a pole carries multiple guy leads, and it pairs naturally with thimble clevises and strand connectors in the down-guy assembly. For replacement work, crews appreciate that our castings follow the original North American hole patterns, so existing bolts and hardware can be reused. In high-corrosion environments such as coastal or industrial zones, we recommend confirming the zinc coating weight at order stage.
We are a casting factory, not a trading company: your drawing or sample goes directly to our pattern shop. For tucker connections we regularly adjust overall length, hole diameter, bend radius, and section thickness to match utility standards. Reverse-engineering from a sample includes material verification by spectrometer and a first-article dimensional report. Sampling lead time is typically 2–4 weeks; pilot lots can be produced before committing to full tooling. Whether you need a standard pattern in large volume or a rare legacy pattern in small volume, the sand casting route keeps tooling cost low.
Production lots are controlled through: dimensional inspection against the approved drawing; mechanical testing of companion cast test bars for tensile strength, yield strength, and elongation per ASTM A536; galvanizing thickness measurement; and visual/surface inspection for casting defects. Machined load faces are checked for flatness. Documentation (material certificate and inspection report) ships with each lot. Export packaging uses cartons on pallets, typically 25 kg per carton, shrink-wrapped and strapped; customer-specific labels and packing lists are standard practice for our overseas buyers.
1. Can you reproduce an obsolete tucker connection with no drawing?
Yes. Send the physical sample; we measure it, draft the drawing, confirm the alloy, and provide first articles for your approval before production.
2. Which material grade should I choose for heavy guying duty?
For higher loads, ASTM A536 Grade 80-55-06 or EN-GJS-500-7 offers increased strength; we will advise based on your rated load and strand size.
3. Do you supply matched bolts and washers with the castings?
We focus on castings, but we can quote complete kits including bolts and square washers through our supply chain if required.
Upload your drawing or tell us the pattern you need, and receive a quotation within 24 hours. Reach our sales engineers on WhatsApp: +86 185 6156 7088 — samples, material certificates, and technical drawings available on request.
Need a formal quotation? Send your Tucker Connection Casting drawing, quantity and target price through our request for quotation form — it goes straight to the foundry inbox, and we reply with a priced offer, material certificate draft and production lead time within one business day.
Professional technical research and development team to provide customers with the best solution.
Jimo District, Qingdao City, Shandong Province, China
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