where are 8 side nuts used?
- Thread starter Gmonkee
- Start date
dutchgray
Well-known member
Seen a few 8 flats on large pipe fittings, quite a few axle nuts and some industrial machinery. Never seen an 8 point though.
OutsideMachinist
Well-known member
I have only seen it like Dutchgray, on large pipe fittings/union nuts. Rarely.
The rear on a school bus trucks and heavy equipment use square plugs. I've been retired for a few yards now but I have a set of Snap On 8 point (square) sockets that are well used. Mostly for changing oil in the rear or power strewing box on an MCI coach. A work out on an old diesel tractor made in 1974 that also has a lot of square plugs on it. I als have a plug socket set for external plugs.
Wakefield
Well-known member
On a connection into my gas meter and also the gas line into the water heater
KnurledNut
Well-known member
Not a nut, but a screw.
Enclosed trailer skin and trim screws are double square 8 pt.
Typically removed with #2 single square bit.
They are often mistaken as torx.
Enclosed trailer skin and trim screws are double square 8 pt.
Typically removed with #2 single square bit.
They are often mistaken as torx.
Some old electrical fitting locknuts were 8 sided. I run across them sometimes in my 90-year-old house. 8 flats, with a point between each pair of flats. Never seen one without a point between the flats. Seen some plumbing drain nuts that were rounded over between the flats, but they have all been hexes.
Provincial
Well-known member
The barrel is held onto a Remington Model 742 rifle with an octogon (8-sided) nut.
dutchgray
Well-known member
When I say that I have never seen an 8 point, I mean an 8 point bolt or nut that is two squares on top of each other, like a 12 point head bolt. Everything I have seen is octagonal.
monkeyspanners
Well-known member
Some makes of compression plumbing fittings here use 8 sided nuts, pia as the threads are different too so you can't say take out an elbow and put in a T.
metaldad
Well-known member
York International uses them on their water chillers.
joe_padavano
Well-known member
Is the OP asking about the uses for eight point sockets like this one?
FYI, early 1960s Oldsmobiles used an oil pan drain plug with an eight-sided recess. There was a special tool, but the recess was actually overlapping 1/2" square drive size, so a bare 1/2" ratchet will work.
FYI, early 1960s Oldsmobiles used an oil pan drain plug with an eight-sided recess. There was a special tool, but the recess was actually overlapping 1/2" square drive size, so a bare 1/2" ratchet will work.
shamrock12
Well-known member
My dad have a vintage S-K 1/4 drive set (from 70s) which came with 1/4" and 5/16" 8-point sockets included. I didn't notice them as it took me awhile to figure out why they wouldn't fit while the other sockets were too small or large. Where would these little sockets be used at that time?
dutchgray
Well-known member
Shamrock12
The 8 point sockets would have been used on square head bolts, found on old machinery and lag bolts.
The 8 point sockets would have been used on square head bolts, found on old machinery and lag bolts.
Ohhhh.... you mean a bolt head that would fit snugly into a star socket; sixteen sides and points, with the points alternating concave and convex.
In that case, neither have I.
DieselDent
Well-known member
what size?
8 point would be a double square socket used on square head plugs. or I think your looking at 8 sides which is an octagon socket, I still need to find the right one for mine but the fuel sender on my boat tank takes one. I looked up a few places and for a 2 1/8 octagon socket it was going to be about $150+ because they are custom made.
8 point would be a double square socket used on square head plugs. or I think your looking at 8 sides which is an octagon socket, I still need to find the right one for mine but the fuel sender on my boat tank takes one. I looked up a few places and for a 2 1/8 octagon socket it was going to be about $150+ because they are custom made.
BlueBomber
Well-known member
A picture is worth...well, you know. Can you post one?
monkeyspanners
Well-known member
Just remembered immersion heating elements here are 8 sided, theres a special box wrench for undoing them to allow for the insulation on the hot water tank.
hangfirew8
Well-known member
Stove bolts. More precisely their square nuts. The sockets are 8 points for the same reason we use 12 point sockets on 6 point nuts.
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