screwsself-assembly-furniturewasher
So I'm assembling a pull up bar and its assmebly instructions look like this
In the parts list it mentions only one type of spring washer (quantity 4).
But it actually came with two types of washers (quantity 4 each), type1 and type2.
Am I supposed to use both of them? And in what way? Any help would be appreciated!
If the threads are in metal, then you can replace the threads. What you're looking for is called a T-nut and should be available at any hardware store. Take a bolt with you to get the right size.
If the threads are in the wood, a simple option is to just take the bolt to a hardware store and buy a bigger bolt. T-nuts are also a good option if a bigger bolt isn't practical, but you will also need new bolts because you will not find T-nuts that match the threading of your current bolts.
The bigger question is how many vertical supports and how long are they? 1/4" lags 2” into the 2x4 has 510lb pull out strength (255lb/inch) put 2 or 3 in each piece of strut and each one can handle hundreds of pounds. 5/16” lags 266lb/inch; 3/8"lags 305lbs/inch. You don’t need a very big lag bolt when using multiples. My examples have a small safety factor added in and these won’t degrade the strength of the 2x4. I usually drill pilot holes, But not all brands of screws need pilot holes. The depth into the wood is the threaded part that provides the pull out strength over ½" sheetrock I would make sure to have at least ¾" -1” smooth shank that provides the sheer strength as the weak point is the start of the threads.
Best Answer
They gave you four lock washers instead of 4 locking nuts. No problem. Install the bolts as shown in the instructions. Then install a flat washer on each bolt followed by a lock washer and then the nut. Tighten as specified.
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