What is a Grade 4 nut?
ASTM A194 Grade 4 is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon molybdenum steel. Grade 4 nuts can be produced by means of hot forging, cold forging or machining from bar stock followed by heat treatment.
What is the difference between 2H and 2HM nuts?
Both 2H and 2HM nuts have the same chemical composition. Grade 2H nuts have a higher proof load requirement.
Is Grade 5 the same as A325?
As a comparison, the ASTM A325 bolt is roughly equivalent to the SAE grade 5. A grade 8 bolt would be one that meets ASTM A490 standards. The A325 bolt strength, or SAE grade 5 bolt strength, is usually used for structural bolting projects.
What is Grade 4 hex nut?
ASTM A194 grade 4 Heavy Hex Nut is a bit larger and thicker compared to standard hex nuts. It is a specification which covers alloy, carbon and stainless steel nuts considered to be utilized in high-pressure and temperature service.
What does ASTM A193 mean?
ASTM A193 B7 is a Bolting specification for medium-high temperature applications. It is a heat treated Chromium Molybdenum steel and is considered for applications up to 450° Celsius (840° Fahrenheit).
What does ASTM A194 grade 4 mean?
ASTM A194 Grade 4 Specification for high tensile nuts and other internally threaded fasteners, made from heat treated carbon molybdenum steel. ASTM A194 Grade 4 is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon molybdenum steel.
What is A194 Gr 4 square nuts?
A194 gr 4 Square Nuts is a four sided nut. It has greater surface in connection with the part which it is being fastened and hence it offers considerable resistance to loosening. It is meant to be used at temperatures i.e. higher than 500° C.
How are Grade 4 nuts made?
Grade 4 nuts can be produced by means of hot forging, cold forging or machining from bar stock followed by heat treatment. ASTM A194 specification covers requirements for chemical composition, heat treatment, hardness, proof load, etc., for Grade 4 nuts.
What is the heat rating for Grade 4 heat treated steel?
Heat Treatment: Grade 4 shall be quenched and tempered at a temperature of at least 1050 °F [565 °C]. Proof Load Nominal Size, Inch. Threads Per Inch Proof Load, lbf Heavy HexA HexB 1/4 20 5 570 4 770 5/16 18 9 170 7 860 3/8 16 13 560 11 620 7/16 14 18 600 15 940 1/2 13 24 830 21 280 9/16 12