@kporter.stuff: Fiberglass washers are a glass fiber reinforced composite, built on the same basic material science as G10 or FR4 circuit board substrate, and that construction gives them a very different performance profile than a simple cellulose fiber washer. This explains why fiberglass washers are specified for electrical insulation and structural standoff applications under real mechanical load and elevated temperature, including electrical panels, motor terminal hardware, and transformer assemblies, and why their rigidity also means they cannot conform to surface imperfections or create a soft seal the way a cellulose fiber washer can. Knowing this difference matters before you swap one washer type for the other in a design. 🙌🏼⚙️ #mechanicalengineering #DFM #productdesign #materialscience #fastenerengineering

kporter | engineer
kporter | engineer
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Monday 21 September 2026 03:46:02 GMT
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williamschmidt280
bills_1966 :
what are the torque/compaction load limits on this material and electrical resistance capabilities
2026-09-21 04:05:19
7
tumbleweed2437
Tumbleweed :
look similar to Toyota sump plug washers
2026-09-21 05:11:15
3
ka_nootti
ka-nootti :
but it IS plastic, reinforced plastic
2026-09-21 10:08:55
2
thatpilotkid
jack with an a :
I work in the aviation industry and we see phenolic all the time, can you do a run down of phenolic?
2026-09-21 12:03:24
5
yer.mom3
yer mom :
I have leaned something new today. Thank you for this!!!
2026-09-21 09:02:05
4
tommynotapassport
tommyhorse64 :
I have used them bolting up flanges on the cooling water side of nuclear power plants.
2026-09-21 04:30:06
6
hunter_and_jay
Hunter and Jay :
Awesome tutorial!!!!
2026-10-05 16:54:50
1
tvanhierden
TvanHierden :
Maybe this is more of a topic for a different creator but I started my mechanical engineering degree this year and one of the first things we learned was the iron-carbon diagram and it amazes me how many different properties you can get by changing the carbon percentage in steel and how you can see the manufacturing process under a microscope. (Not to mention the effect of how fast you cool the steel and what other materials you add in like chromium and molybdenum).
2026-10-05 11:54:38
1
proskene
Jubba :
I’m not an engineer but am completely nerding out
2026-10-08 18:38:34
1
frostwraith_turnip
loopy :
ok, giving I had never heard of these, I tracked down some of the uses. it seems these fr4 types are used a lot in high voltage systems and bus bars. inverters and power electronics. come to think of it, I wonder if these were what I saw under TO3 packages back in the day. Although there often IIRC some thermal compound involved there.
2026-09-23 11:46:09
2
caseyinkentucky
caseyinkentucky :
I used to build fiberglass cooling towers. We used stainless bolts and washers lol
2026-09-21 10:54:11
2
skullcracker73
Bender Rodriguez :
their compressive strength is very high
2026-09-21 08:26:06
2
acra3zy
Itsme :
Have you ever used wedge washers?
2026-09-22 21:25:39
2
dannydienamo
DannyDienamo :
its this similar to glass filled plastic?
2026-09-25 13:06:18
0
simo.sorsa
Simo Sorsa :
very interesting video. never seen this kind of washer in any means. common place to find it?
2026-09-21 09:41:38
2
mrobart07
M Robarton :
so it's fiberglass strand reinforced resin. so the true question is what is the resin made of?
2026-09-21 20:47:39
2
bo220
bo220 :
👍👍👍
2026-09-21 13:41:02
2
danstuck955
Dr. Dan :
🥰🥰🥰
2026-10-10 06:23:36
1
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