Questions tagged [fasteners]
The fasteners tag has no usage guidance.
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Which Timber LOK screws to reinforce shallow ridge, and how many?
I bought a tiny house shell that still needs some rafter reinforcement. I have chevron-shaped gussets from 1/2'' plywood that I'm going to glue and nail on either side of the middle gambrel joint on ...
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Mechanical fasteners for HDPE pipe and sheet?
I need to fasten pieces of HDPE together but I’ve heard gluing HDPE is difficult.
I've bought sheets and pipes to make a feeder for a tortoise.
I will be using the sheets for covers for the pipes.
The ...
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Looking for a type of the screw with very narrow end
I'm looking for a type of screw like this:
but with even smaller diameter (pin size) smooth end. Preferably M6 thread and less than 2mm diameter end, preferably smooth. If specific part ...
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Thread pitch for sheet metal screws - what are the pros/cons of high TPI?
Looking at these two self-tapping screws:
The one on the left is 1/4-20 (coarse) thread, the one on the right appears to be 1/4 but I have no idea what TPI, super coarse?
Trying to understand the ...
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Tension and Shear on L-Bracket Offset From Wall
I’m planning to mount a mantle on a brick fireplace wall using two iron L-brackets that are 5” wide and 1/4” thick. Each bracket has four 5/16” mounting holes…two at the top and two at the bottom. The ...
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How to connect / branch two metal wire cables at 90degree angle
I have a 1mm thick wire cable that's 200cm long.
Using the same cable, at 10cm intervals, I have to branch / tee off at 90degree angles.
Some sort of tee crimp / ferrule comes to mind as a last report,...
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how does this fastening system work
the bearing in the pictures below is securely fastened with some kind of rivet that doesn't take up any room on either side, so that the bearing can roll through some tight spaces while still bearing ...
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How do I choose the optimal screw diameter for a given hole size?
I purchased a cheap project box made of ABS plastic (so, relatively soft material). The box has pilot holes (with counterbore) on one half and matching smooth bosses/protrusion for driving the screws ...
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Straight Thread Seal Performance
Is it possible for straight threads to create a hydraulic/mechanical seal without the use of o-rings or sealants? From what I've read, in the oil industry buttress threads are used, in my application ...
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Calculating riveting force
How do you calculate the force required to form a tubular riveted joint? Assume the tubular rivet's ID, OD, and initial and final length and diameters as variables.
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Maximum tensile and shear loads on screw
I'm using a screw in an application where I want to have a high degree of confidence the screw will not fail, and I want to be sure I'm calculating the maximum tensile and shear loads it can sustain ...
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Spring clamps recommendations to lock a breadboard when inserted
I need to lock a soldering breadboard to a 75 mm coupler cap. The picture below is upside down: the board will be hanging underneath the coupler cover.
And the assembled pic:
The board is inserted ...
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Origins of the "threaded fastener pullout formula"
I was looking through NASA's document for "Installation Torque Tables for Noncritical Applications" and noticed their formula for the pullout load of a fastener on a certain material. It ...
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Distorted threads and bolt preload
Say a bolt is clamping 2 plates together, by threading into a distorted thread in the bottom plate. After the thread is used several times and becomes less distorted, will the relationship between ...
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Sleeve nut with non-circular cylinder
I've been scouring the internet for hours to find this type of nut. The requirements are fairly simple:
I want to cut holes into two metal sheets to join them with some kind of fastener (e.g. nut and ...
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