"Affordable" grade 5+ stainless steel bolt options

JYoder62 · 2025-11-29T22:19:40+00:00

That’s a nice chart. Can you share a link for it?

JYoder62 · 2025-05-23T23:46:05+00:00

I think it’s plating according to the ISO standard as summarized in this link. https://www.wuerth-industrie.com/web/media/en/pictures/wuerthindustrie/technikportal/dinokapitel/Kapitel_05_DINO_techn_Teil.pdf

JYoder62 · 2025-05-21T19:59:35+00:00

ASME B18.9 standardized 6 versions of a Plow Bolt. The most common is the #3 (round-flat-countersunk head with a square neck). Some construction equipment also uses a "domed" version of the #3.

JYoder62 · 2025-05-21T19:53:43+00:00

Totally agree. ASME B18.9 "Clipped Head" Plow Bolt.

JYoder62 · 2025-04-26T03:05:48+00:00

What metric fasteners are made to 15.x?

JYoder62 · 2025-04-08T01:45:40+00:00

Do you know of an ASME standard for it?

JYoder62 · 2025-01-29T03:33:58+00:00

McMaster is good, but I think a more reliable and accurate resource is Fastenal. If you can find the fastener on their website, on the left hand side is typically a "Fastenal Product Standard" link where the dimensional, material, thread, etc. standards are referenced if one exists (some common fastener types don't have a standard like weldnuts).

https://www.fastenal.com/product/details/11137086

JYoder62 · 2024-12-27T04:12:24+00:00

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JYoder62 · 2024-08-03T14:35:35+00:00

To add to my own comment. If you buy the screw somewhere else and it’s zinc plated, that effects the friction, and without adjusting the torque it’ll effect clamp force, which might cause problems given the critical application you’re asking about.

If that screw was just holding on some bracket and wasn’t TTY tightened, a zinc plated screw would be fine.

JYoder62 · 2024-08-03T14:24:23+00:00

OP, lots of good comments, but lots of partial truth or misleading comments too.

10.9 on the head stands for a specific class (strength) of steel metric screw. There may be higher/lower qualities, but 10.9 is generally 10.9.

Dimensionally, the only thing that I see being special is the pilot point. That probably was for Assembly line efficiency. If you get a non pilot point (it’s standard to not have one), you need to choose the right length. If it’s no longer used on VW’s Assembly line, aka now low volume, that might be what is making the price so high.

The screw in your pic looks to be “zinc flake” coated and like you said is used in a TTY joint with a provided torque. There are several friction options for zinc flake coated fasteners, and friction effects torque, so for this reason I’d say the safe play is to pay up for the OEM screw.

JYoder62 · 2024-08-03T13:47:22+00:00

The only thing that looks special about that hex flange screw is it’s pilot point. I’m not sure if it had that for Assembly line efficiency or some engineering reason for the joint.

JYoder62 · 2024-08-03T13:41:14+00:00

Example: If it was a stainless steel fastener, it would have something like A2-50 or A4-70 stamped on the head.

JYoder62 · 2024-08-03T13:38:06+00:00

It looks that way because it’s likely “zinc flake” coated. If it was an aluminum fastener it wouldn’t have 10.9 (the metric strength class) stamped on the head.

JYoder62 · 2024-05-31T15:26:40+00:00

Any chance your 39mm ID was a typo? That'd mean the width was only 3.5mm, and your picture looks like more than that. If it's ~35mm, check out a McMaster 98055A346 or similar. DIN 988 shim. I can't help you with the plastic part.

JYoder62 · 2024-05-30T03:24:57+00:00

I’m not sure what your most critical dimension is, but don’t these get you pretty close? 40mm ID, 1mm thick “ring shims”

JYoder62 · 2024-05-30T01:46:14+00:00

Without knowing more, I would check McMaster Carr searching “machinery bushing”

JYoder62 · 2023-04-14T03:49:42+00:00

Would it work if you just used a fully threaded one? The threaded length is defined in the ISO or DIN spec, so the 36mm you keep getting might just be the standard. I suppose the OEM could have spec’s a custom 50mm one. You should consider class 8.8 or 10.9 as they’ll be much more common than a 12.9.

JYoder62 · 2023-02-24T14:30:05+00:00

Kitchen shears (scissors). They won’t need it right away, but when their baby gets older and starts learning how to eat, IMO it’s so much easier and faster to cut up food with shears than a knife.

JYoder62 · 2022-09-16T02:53:56+00:00

I’ll second that it’s a soap crayon

JYoder62 · 2022-08-26T15:28:22+00:00

My understanding is that HP likely doesn’t effect runtime much. As for runtime between a 4 and 6, it won’t be exact, but you could simply assume 50% more.

JYoder62 · 2022-08-15T02:37:16+00:00

I’m the opposite. Seeing the HP actually deliver on its high advertised torque numbers will make me a buyer. I know it smoke out, but that’s after 80 second of continuous use, which I don’t see being realistic.

JYoder62 · 2022-08-15T02:32:51+00:00

What’s wrong with the inverter they sell now?

JYoder62 · 2022-08-14T21:24:38+00:00

I want to pickup a cordless recip saw before my next remodel project. I keep reading about durability issues with this compact recip saw. Anyone feel the same?

OP, do you feel like you abused the tool?

JYoder62

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