Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
(OP)
Hello
As an European what bolts and nuts does people mean when they talk about these 2(two) ASMEs below ?: (Are they AISI 304(A2-70) or 316(A4-70/80) equivalent ?)
Bolts:
"SA193GRB8CL2"
= ASME SA193GR B8 class 2.
Hexagon nuts:
"SA194GR8M"
= ASME SA194GR 8M.
What "GR" and all those mean ? Is GR=Grade ?
Can I just use common 304(A2) or 316(A4) stainless fasteners ?
+Does these "ASMEs" also determine thread standard ? Are the threads metric or ?
Searching information about these ASMEs just leads to a lot of Chinese and Indian websites.
As an European what bolts and nuts does people mean when they talk about these 2(two) ASMEs below ?: (Are they AISI 304(A2-70) or 316(A4-70/80) equivalent ?)
Bolts:
"SA193GRB8CL2"
= ASME SA193GR B8 class 2.
Hexagon nuts:
"SA194GR8M"
= ASME SA194GR 8M.
What "GR" and all those mean ? Is GR=Grade ?
Can I just use common 304(A2) or 316(A4) stainless fasteners ?
+Does these "ASMEs" also determine thread standard ? Are the threads metric or ?
Searching information about these ASMEs just leads to a lot of Chinese and Indian websites.
RE: Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
GR8M for the nuts is type 316.
You can find regular B8 fasteners (not type 2) on McMaster.com
RE: Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
SA-193 uses UNC thread standards for 1" and below. 8UN for larger than 1" diameter.
I am not familiar with metric information.
RE: Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
SA193/A93 references A962 for thread dimension requirements. To the best of my knowledge and experience, A962 also 'allows' a.o. metric thread. See table 2 of A962.
In principle, when specifying A193 ... studs (where ... = B8M or B7 as an example), you specify chemical and mechanical requirements. You can always buy and desire a A193 B7 stud with BSPP threads if you like; the dimensional aspect is often considered loose of the ASTM (material & chemical) aspect.
Huub
- You never get what you expect, you only get what you inspect.
RE: Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
OK, so UNC for 1" and below, 8UN for larger than 1" diameter is standard, but A962 also says "unless otherwise specified" so you can request anything. That Table 2 in A962 would have been handy a few days ago when I had to deal with an M24 bolt.
RE: Bolts and nuts ASME SA193GRB8CL2 and SA194GR8M ?
Huub
- You never get what you expect, you only get what you inspect.