Q:What is the wire diameter for this Everbilt 1 in. x 12 in. Zinc-Plated Extension Spring?
by|Jan 30, 2023
3 Answers
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A: Sorry, Supplier Quality is in err, no way the spring wire is 0.013". Maybe off by a factor of 10, which would make the correct spec 0.130" (1/8" = 0.125"), and ID of 0.740". By comparison, a standard box cutter blade is about 0.020" thick.
by|Aug 13, 2023
A: I just bought one of these, and I measured the wire diameter at 0.105".
by|Feb 1, 2024
2 found this answer helpful
A: Everbilt 1 in. x 12 in. Zinc-Plated Extension Spring has wire diameter of roughly 0.013"
by|Apr 26, 2023
Q:I am currently looking for Attic Door Access Springs. When I searched for the mentioned item, this product comes up. Can this spring be used for attic door access? Please advise.
by|May 11, 2021
1 Answer
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A: It depends on the construction of the ladder and its weight. Please contact the manufacturer, or review the installation instructions, for their recommendations for replacement parts.
by|Sep 9, 2023
1 found this answer helpful
Q:Do you have the k value for this spring?
by|Oct 17, 2016
1 Answer
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A: I have this spring. Based on some information measurements in my garage with lifting weights, the k appears to be in the range of about -750 N/m above approx 10 lbs. I had no way to determine initial tension, but a 3.3lb weight hung produced no displacement (light between coils). At 15 lb I saw about 2.8 inches displacement, at 20lb a little under 5 inches displacement, and at 25lb about 5.8 inches displacement. Interpolating these values shows an intercept around 10lb, so I assume that's the initial tension. Safe working load is listed as 35 lb so I didn't test above 25lb. Hope this helps - sorry, I don't have an Instron.