2" receiver hole size

[thito01]

Building a winch adapter to fit in my 2" receiver. I know the hitch pin is advertised as 5/8", but is 5/8" really the drill size used to make the hole or is a slightly larger drill actually used by the industry?

[aametalmaster]

5/8" is the standard. Maybe yours has some powder coat in the hole...Bob

[square1]

if the pin is 5/8 then the hole needs to be bigger than 5/8 like 35/64or 11/16

[m.k.swelding]

drill the hole 11/16 just so you know shell fit. wont hert it any being a little on the big size.

[TerryL]

Hi,
I have a front hitch on my Exploder and had to weld a license plate holder together, cops told me to get her done. 5/8" drill did the trick for me with paint on it. 1/32" bigger won't hurt with paint on it.

[J hall]

So, you have the receiver, right? And it has the hole in it, right?

[thito01]

So, you have the receiver, right? And it has the hole in it, right?

Yes, but the hole is well used. I measured 3 receivers, two hitches and 3 hitch pins. All had different numbers, but since they are all used and may have wear, I thought I would ask. I thought some full time fabricator might read the question and know the answer.

[stick man]

we drill all the ones we make 1/64 over 5/8 works for us.

[Bodybagger]

In structural steel applications, the hole drilled has 1/16" larger diameter than the nominal bolt size. For example, a 3/4" bolt would be drilled 13/16." And the calculations of the connection strength figure a hole 1/8" larger than the nominal bolt diameter to include an additional 1/16" of damage that can happen in drilling and punching operations (AISC D3.2).

However, this practice is necessary mainly due to multiple bolt connections where alignment of all bolt holes would be impossible (due to fabrication tolerances) if each hole were drilled exactly the nominal diameter of the bolt used).

That said, diameter you drill the pin holes depends on the tolerance of the hole location... the more slop, the larger the hole needs to be to accommodate it. At a minimum, add 2 times your location tolerance to the diameter.

If you can locate AND DRILL the center within 1/64", then add 1/32" to 5/8". Or just drill it 11/16" and use the standard the steel industry does.

[J hall]

Yes, but the hole is well used. I measured 3 receivers, two hitches and 3 hitch pins. All had different numbers, but since they are all used and may have wear, I thought I would ask. I thought some full time fabricator might read the question and know the answer.

Now I see where you were headed!