RapidBolt
Refining
Heater and furnace piping specifying 321 bolting.
Stabilised stainless (321)
ASTM A194 Grade 8T Heavy Hex Nuts
ASTM A194 8T (321 stainless) heavy hex nuts for A193 B8T studs where stabilised stainless bolting is specified, quoted buy-to-order.
SUPPLY
Buy-to-order
LEAD TIME
Quoted per RFQ
RECORDS
EN 10204 3.1 / 3.2
GRADE OVERVIEW
A194 8T nuts, specified correctly.
Grade 8T uses titanium-stabilised 321 stainless, which resists sensitisation and intergranular corrosion after exposure to heat.
It is commonly specified with B8T studs in refinery and heater service. Confirm the stud class and certification required.
- GRADE
- ASTM A194 / ASME SA-194 Grade 8T
- MATERIAL
- AISI 321 titanium-stabilised stainless steel
- MATCHED STUD
- ASTM A193 B8T stud bolts
- SIZES
- 1/4"–6" · M5–M150
- FORM
- Heavy hex, to ASME B18.2.2 or your drawing
Reference information only. Your specification and the supplied certificates govern; no stock or equivalence is implied.
WHERE IT IS SPECIFIED01 02 03
Typical applications
Petrochemical
Stabilised stainless process lines.
Power
Exhaust and heat-exposed stainless connections.
WHAT TO PUT ON YOUR RFQ
Quoted right the first time.
Size & thread
Nominal size from 1/4" to 6" or M5 to M150, thread pitch (UNC/8UN or metric) and quantity per line.
Matching studs & coating
Pair with ASTM A193 B8T stud bolts; state coating such as zinc, HDG or Xylan/PTFE and any oversize tapping.
Records & testing
EN 10204 3.1 or 3.2, hardness, proof load, PMI or impact testing as your specification requires.
QUESTIONS
A194 8T FAQs
REQUEST A QUOTE
Send your A194 8T nut requirement.
Send sizes, quantities, matched studs, coating, certificates and required date, or attach a line list or drawing. EMG confirms sourcing, records and lead time against your RFQ.
ISO 9001:2015 quality-managed supply
