Questions tagged [fasteners]
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104 questions
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What crimp tool setting should I use for these bootlace ferrules?
I have this crimping tool and these ferrules for 22AWG stranded wires and these ferrules for 18AWG stranded wires.
On the crimping tool with datasheet here I can see these numbers for each crimping ...
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Torsional rotation of bolt in the chemical anchor and failure of bond
I would be really grateful if an expert in chemical anchors can answer my question.
I used Fischer vinyl ester hybrid mortar-FIS V plus 300 T. I used M8 bolt/ anchor in an 8 cm deep hole with ...
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How to bolt two stainless steel dog bowls together?
I have two bowls like this:-
The outer diameter is approximately 280 mm, with a 10 mm lip. The lip also has a rolled edge to it. The overall height is 100 mm. The metal is stainless steel, less ...
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Discrepancy in Wikipedia article about screw dimensions
I've put together a look up table for myself for tapping & screws, both metric & imperial.
Now, my concern is the $D_{min}$ in both of the Wikipedia article on both metric & imperial:
...
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How do locking flange nuts work?
I have 1/2-13 x 2-1/2 in. Grade 8 Hex Bolts.
And I have flange nuts:
Grade 8 Coarse Hex Flange Nuts, 1/2-13, Yellow.
1/2-13 Locking Flange Nut, Black
The yellow flange nuts can be finger tightened 70%...
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Through-bolt connection of two square tubes
I am putting together a bolted structure with square 1" x 1" 6061-T6 Aluminum perforrated tubes, and I need to minimize the overall mass of the structure. If I do the through-bolt connection ...
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Effects of re-using plastic parts which have been torqued with thread-forming fasteners?
I'm having a hard time finding information on the effect of re-torquing plastic parts which have been secured with thread-forming fasteners.
I'm using injection molded plastic parts made of 20% GLASS ...
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My own tap drill system
I've been working with my own tap drill system ever since I came across this diagram:
https://upload.wikimedia.org/wikipedia/commons/4/4b/ISO_and_UTS_Thread_Dimensions.svg
So the tap drill is ...
- 129
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Better traction between bolt & coupling nuts
I need some M10 coupling nuts to fasten with my M10 1.5mm pitched bolts. Either I order the coupling nuts online or I weld together M10 ordinary nuts together until I have the right length.
Going ...
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How to design the shelf (including the needed screws) incorporating the requirements for the load?
Details
I want to make a wardrobe, and I'm considering designing it without the wardrobe's backside. Instead, I plan to attach shelves directly to the timber joists behind the wall. However, if the ...
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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 ...
- 101
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456
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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 ...
- 197
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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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