RapidBolt
LNG
Low-temperature piping and equipment flanges.
Chromium-molybdenum alloy steel
ASTM A194 Grade 7 Heavy Hex Nuts
ASTM A194 Grade 7 alloy-steel heavy hex nuts for A320 L7 low-temperature studs, quoted buy-to-order with impact testing and coating options.
SUPPLY
Buy-to-order
LEAD TIME
Quoted per RFQ
RECORDS
EN 10204 3.1 / 3.2
GRADE OVERVIEW
A194 Grade 7 nuts, specified correctly.
Grade 7 is a chromium-molybdenum alloy steel nut, commonly specified with ASTM A320 L7 studs in LNG, ethylene and other low-temperature piping systems.
Where impact testing is required (often designated Grade 7L in specifications), state the test temperature and acceptance criteria on the RFQ.
- GRADE
- ASTM A194 / ASME SA-194 Grade 7
- MATERIAL
- AISI 4140/4142 alloy steel, quenched and tempered
- MATCHED STUD
- ASTM A320 L7 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
Ethylene and cold-service process lines.
Heavy equipment
High-strength alloy bolting where specified.
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 L7 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 Grade 7 FAQs
REQUEST A QUOTE
Send your A194 Grade 7 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