RapidBolt
Sour LNG feed gas
Cold, H₂S-containing process piping.
Alloy steel, hardness-controlled
ASTM A194 Grade 7M Heavy Hex Nuts
ASTM A194 7M hardness-controlled heavy hex nuts for A320 L7M studs in sour and low-temperature service, quoted buy-to-order with full traceability.
SUPPLY
Buy-to-order
LEAD TIME
Quoted per RFQ
RECORDS
EN 10204 3.1 / 3.2
GRADE OVERVIEW
A194 7M nuts, specified correctly.
Grade 7M is the hardness-limited version of Grade 7, specified alongside L7M studs where low-temperature service meets sour-service hardness limits.
State impact testing, hardness verification and sour-service clauses on the RFQ so certificates match your project requirements.
- GRADE
- ASTM A194 / ASME SA-194 Grade 7M
- MATERIAL
- AISI 4140/4142 alloy steel, tempered to a controlled hardness
- MATCHED STUD
- ASTM A320 L7M 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
Offshore
Low-temperature topsides piping under sour specifications.
Gas processing
Cryogenic and sour-service flange bolting.
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 A320 L7M 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 7M FAQs
REQUEST A QUOTE
Send your A194 7M 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
