Never have seen an adapter like that, except for 1/4" hex drives. You might be able to swap in a snout/hammer assembly from an 8053 or 8055 (1/2 or 3/4 square drive), but that would be a heck of a cash outlay. IR would be the people to contact, they might have an idea.

If anybody would have one, it would be a Snap-on, Mac, or other such dealer.

Thanx guys. Neither the current Snap On or Mac catalogs has 5/8 stuff. They have adaptors but go from 1/2 inch to 3/4 inch. Contacting Ingersoll Rand directly is a good idea - I hadn't thought of that.
Steve

I am almost 60 and I do not remember five eighths drive.

Me too and not me either, nor were there any in my father's collection.

Yeah, I'm 57 and I've been using this wrench for 50 years. I started working in my dad's truck garage at age 7 as the tool carrier/cleaner, parts runner and oil carrier. The electric impact wrench was part of my inheritence from my dad. I'm going to inventory the impact sockets and try to post the brands here.

Not sure if it's worth the trouble, but how about grinding down the flats of a 1/2x3/4 adapter?

My thought exactly. Grind down a 1/2 X 3/4 adapter.

John

I have 5/8 electric IR wrench in metal box with what every came with it I go look later see what adapters I have I no have 5/8 female to 1/2 male extinsion. Got it in 1976 never use before I got it very strong electric wrench.

PROTO used to sell a line of 5/8 impact sockets and accessories, but I think they only sell a few 1/2 x 5/8 and 5/8 x 3/4 adapters. PROTO was independent 30 or 40 years ago, was acquired by Pendleton, then sold to IR, and now to Stanley.

Here is a link that might be useful: Stanley-Proto catalog

Gator and Sawdust The idea of grinding down a 1/2 inch to 3/4 inch adapter to 5/8 inch is intriguing but can I do this to a hardened adapter for impact use? Folks, I inventoried the tool and sockets and this is what I found: The wrench is labeled Ingersoll Rand Universal Impact Tool, size 8U model B, serial# 39571. The 5/8 drive sockets are a mix of Ingersoll Rand, Herbrand and Williams. The 5/8 to 1/2 inch adapter is labeled APEX Dayton, Ohio EX 505. There is also a 5/8 to 3/4 inch adapter labeled Williams 5-6. The other tool in the box is a 6 inch Snap On impact extension in 5/8 drive labeled PHD-6.
Steve

The problem is you don't want to heat it up. So a wet grinder would probably work, although slowly.

John

My electric wrench same as yours one 10 inch extension one 6 inch 5/8. One 5/8 x 1/2 male adpter about 4 inches long. I have no sockets just screwdriver impact drives large flat blade two phillips no. 3 and no.4. 5/16 to 5/8 tap driver. Sorry no reverse adapters in set. This electric wrench is single insulated so using it with ground very important to prevent shock or death. I have build many tools by welding but with chrome tools never weld on them the impact are dry lubecated that black color ones and cheaper perset. What I do with your problem is get a 1/2 female to 3/4 male impact adapter weld that to one 5/8 extension you have with 3/32 7018 welding rod, using reverse polarity with DC welder set to 60 amp. there nothing to lose by trying grinding down flats first use 5/8 good openend wrench to check the sizing then weld if don't managing heat in metal don't melt metal let cool down to cold with air before adding more heat you have masterpiece when finish lol.