r/Fasteners

Can anyone see what is going on? It’s only this manufacturing lot of helicoils that’s seeing this issue.

ETA: Thanks for all the replies. Will definitely double check the coil length and tap depth again, but I’m pretty sure they are to spec. Some notes.

We’ve been supplying millions of these helicoils to the customer for almost a decade.

The driver you see comes from HeliCoil direct. It’s intended for this high volume automated application.

It’s only this particular manufacturing lot that is seeing the problem.

Can’t figure out what screw this is. It screws into a different screw that looks the same on the outside and sides, but has a little bit of a dent in it where the screw in this picture goes into.

EDIT: sorry all the top screw is “left” bottom is “right” I meant to post it flipped :/

Hey guys, I got a lifetime resin shed and I have no idea what the fastener size they used for the “ADZ” labeled screw.

The left screw is 14 x 1 (metric)
The middle screw is my unkown
The right screw is a 5/16in x 1-1/2in (ae)

(The lengths don’t really matter I’m making a pocket hole in the 2x4, it’s the diameter)

Also if anyone knows of a good screw replacement without the picture that would be wonderful. I can’t seem to find out what the best type of screw for plastic, I.e the one in the middle I assume. Also attached are what happened to the hole when I used the rightmost screw. The leftmost screw seems too small to actually hold my 2x4 up.

Self explanatory. Got this when I was touring a lab in like 2012? 2013?

I need to remove the screws holding the fan cover, they have no serrations

I'm trying to find this guy, which a few websites are calling a "tri-bolt," that is meant to be used for assembling three-legged stools. I've only been able to find one version that is meant for stool legs with a max diameter of 1-1/8 inches whereas mine are 1-1/4 inches. I could order one and give it a try anyway but I was wondering if anyone has seen these before with more size variants or knows of something that could accomplish the same task.

I don't have any means of making anything like this if it involves more than screwing things together. I was thinking of a ring with tapped holes at 0, 120 and 240 degree but I'm not sure why something like that would exist off the shelf.

Pictured is the (1) interior and (2) exterior fastener of a luggage handle hardware piece. Please advise kindly how I could go about removing it so as to replace the handle on my own since the company will not send me replacement parts or instructions but insists I pay for official luggage repair. (I tried!) thank you :-)

Pulled these out of my 1968 Lotus. Definitely not original. They are both very nicely made, stainless, slightly magnetic. Can't find any grading info on what two radial lines could mean. The previous owner was an aircraft mechanic and the car is peppered with various aerospace and Mil Std hardware.
I'd like to know what to look for so I can order some more. Two radial lines.

Edit: Looking through the MIL-HDBK-131A Spec, item 115 the two lines indicate 80,000 PSI screws in the .250 - 1.000 " range. This particular screw is a MS35308

Washer is dimensionally identical to a MS14183C4. Inconel washers would be a hilarious choice... perhaps they were in service on an aero engine and due to be replaced and the previous owner brought them home for his hardware bin

Found this absolute unit at the shop today. I've seen some big ones, but this one is a beauty.

First photo shows the 1/4 inch diameter fastener that I'm needing info about. The others are for context; I suspect the construction company bought this shelving as kits.

Is this just a nail with a very thick head? Can I remove it to reinstall the support over a wall stud? Will I damage my drywall by removing it (I can mud over a nail hole)?

If I can't "safely" remove it, would I be able to find similar support braces elsewhere to put on the stud locations?

Hi everyone,

I have been to all the specialty hardware stores in my area and nobody can source this type of nut for me. I'm turning to the fastener community to try to help me out before I abandon it and look for an alternative.

This nut is being used with a #8-32 3/8th long screw.

Any help is appreciated!

Found these at the shop. There’s a bit of everything here—Grade 5, Grade 8, some zinc plated, and some heavy-duty rust. You can never have too many spares, right?

Internal hex didn't form

Sorting through all these fasteners today. Wish me luck!