ASTM A194 Grade 8FA, 303 Stainless Steel, Square, Hex Nuts, Heavy Hex Nuts, ASME B18.2.2, B18.2.4.6M, B1.1, Inch, B1.13M, Metric Threads

ASTM A194 Grade 8FA, 303 Stainless Steel, Square, Hex Nuts, Heavy Hex Nuts, ASME B18.2.2, B18.2.4.6M, B1.1, Inch, B1.13M, Metric Threads



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ASTM A194 Grade 8FA Nuts are manufactured from 303 Stainless Steel in accordance with ASTM A194 specification. Torqbolt is a prominent A194 Gr.8FA nut supplier in India.

Type 303 Stainless Steel

Austenitic Steel

Carbide Solution Treated in finished condition

– Finish: Pickling and Passivation

– Compatible Fasteners: A193 Grade B8fa Bolt | 303 Stainless Steel Washers

– Marking: TorqBolt 8FA

– Type: Cold Forged, Hot Forged, Machined From Hex Bar, Bar Stock Milling


Product Features

DimensionsASME B18.2.2, B18.2.4.6M
ThreadsUnless otherwise specified, the threads shall be vertically or horizontally tapped at the option of TorqBolt
Threads ConfigurationASME B1.1 Inch Unified Threads and B1.13M Metric Coarse Threads
Melt OriginIndia
Product OriginMade in India
CertificationDual Certified As per ASTM & ASME Codes
Additional CertificationsPED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Additional RequirementsNACE MR0103/MR0175/ISO 15156 Compliance
Mandatory RequirementsFree from Mercury & Radioactive Contamination

ASTM A194 Gr. 8FA Hex Nuts Specification

AISI 303 is most easily machinable Steel of all austenitic grades of stainless steel. This property is due to presence of sulphur in the steel composition, as the sulphur content improves machining, decreases corossion resistance although it remains good in mild environment and reduces the toughness. It is not advisable to use it in marine environments. It has good oxidation resistance when it is exposed to higher temperatures as 760 Degrees celcious. however, it starts to show carbide precipitation at prolonged exposure to higher temperatures. It is easily cold worked, however sharp bending is not advisable.

ASTM A194 Grade 8FA Hex Nuts Properties

Chemical Physical Heat Treatment

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TorqBolt is a well known stockist of Bright Finish ASTM A194 Grade 8FA Hex Bars with across flats ranging from ¼”-4” & 6mm – 100mm in 1 meter, 3 meter & 6 Meter lengths. All Hexagonal Bars are Magnetic Particle Examined in accordance with ASTM E 709 with Indications & Cracks within 3% of The Diameter as specified in ASTM A194 Specification .

Surface Discontinuity: ASTM A193 / A320 / F593 / F594 / A638 Bolts, Nuts & threaded rods are manufactured in accordance with surface discontinuities acceptable as per ASTM F788/F788M Specification.