Main Page › Forums › L-5 Maintenance Forum › Cowling Fasteners
- This topic has 5 replies, 3 voices, and was last updated 4 years, 7 months ago by
Bill Gorin.
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2021-06-17 at 4:11 pm #4357
I know it’s been asked many times, but I can’t seem to find it. Does anyone know of a source for cowling fasteners? I have a few that are nearly completely worn out and virtually impossible to turn anymore.
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2021-06-17 at 7:58 pm #4358
Depends on which size(s) you need. Some are available and some are not. For a long time AVICO was the go-to source, but they no longer exist. Another source is Mil Spec in Florida, but they have a limited selection. About six years ago the CAF High Sierra Wing looked into getting the uncommon lengths made and at that time Mil Spec required a 100-piece minimum order in any given size. I never heard what came of that inquiry, but High Sierra no longer has their L-5.
As an alternative, Skybolt Aerospace Fasteners makes their ALoc fasteners which are Airlock compatible. I have not yet figured out which of their stud numbers corresponds with the original Airlock numbers (another “on my to-do list”), but their website has a short video showing how to measure them. See https://skybolt.com/portfolio/aloc-aircraft-series/. If you take this approach, let us know what transpires.
JG
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2021-06-17 at 7:58 pm #4359
Depends on which size(s) you need. Some are available and some are not. For a long time AVICO was the go-to source, but they no longer exist. Another source is Mil Spec in Florida, but they have a limited selection. About six years ago the CAF High Sierra Wing looked into getting the uncommon lengths made and at that time Mil Spec required a 100-piece minimum order in any given size. I never heard what came of that inquiry, but High Sierra no longer has their L-5.
As an alternative, Skybolt Aerospace Fasteners makes their ALoc fasteners which are Airlock compatible. I have not yet figured out which of their stud numbers corresponds with the original Airlock numbers (another “on my to-do list”), but their website has a short video showing how to measure them. See https://skybolt.com/portfolio/aloc-aircraft-series/. If you take this approach, let us know what transpires.
JG
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2021-06-17 at 8:03 pm #4360
p.s. Aircraft Spruce carries the Mil Spec #2 flush Airloc in only .051-.060″ and .171-.180 grip length. Look under their A-spec fasteners.
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2021-09-15 at 12:23 pm #4443
FYI check http://www.steinertractor.com and search for fastener. They have a long and short same as on the L5. I bought 1 of each and the long appears to be the better match. I’ve not installed it yet. I used Dremmel tool to clean the notch on a couple and it helped, but I’m prepared to try the Steiner fastener.
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2021-09-15 at 4:18 pm #4444
Good info! Thanks James and John!
Bill
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