Hollaender
Hollaender 70-7 External Coupling Aluminum 1.25 in storage shed
Aluminium external coupling joins 1.25 in pipe for corrosion-resistant structural frames
- Weight0.38
- Aluminium construction resists corrosion for outdoor durability
- ASTM B179 535 standard ensures structural reliability
- External coupling joins 1.25 in pipe sections securely
- Lightweight .38 lb fitting simplifies assembly and handling
- Unfinished grey surface accepts paint or coating as needed
Hollaender 70-7 External Coupling Aluminum 1.25 in
This structural pipe fitting connects two lengths of 1 1/4 inch pipe using an external coupling design. It is made from corrosion-resistant aluminum with an unfinished gray surface. The fitting suits builders assembling handrails, frames or temporary structures outdoors.
Upgrade from internal couplers or steel fittings
Internal couplers reduce the pipe bore and steel fittings add weight and rust risk. This aluminum external coupling keeps the full inside diameter of 1 3/4 inches and weighs only 0.38. The jump is worth it when corrosion resistance and unrestricted flow are priorities.
Simple slip-on installation with set-screw locking
Slide the coupling over each pipe end to the 3 1/2 inch overall length and tighten the supplied set screws. The main issue is misaligned pipes that prevent full insertion; ensure cuts are square and pipes are straight before tightening.
Highlights
- Aluminium construction resists corrosion for outdoor durability
- ASTM B179 535 standard ensures structural reliability
- External coupling joins 1.25 in pipe sections securely
- Lightweight .38 lb fitting simplifies assembly and handling
- Unfinished grey surface accepts paint or coating as needed
Specifications
| Brand | HOLLAENDER |
|---|---|
| Weight | 0.38 |
Questions about this item
What pipe outer diameter does the 1.25 in Hollaender 70-7 coupling fit?
It fits a pipe with an actual outer diameter of 1 5/8 in and has an inside diameter of 1 3/4 in.
How is the external coupling installed, and what step is often missed?
Slide the coupling over both pipe ends so the 3 1/2 in overall length spans the joint, then tighten the set screws fully; skipping the screw-tightening step leaves the joint loose.
Will the unfinished aluminum coupling need corrosion-related maintenance later?
The fitting is corrosion-resistant per ASTM B179 535, so no protective coating or replacement for corrosion is required under normal outdoor use.
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