What ASTM nut is a replacement for a A563 DH nut?
A194 Grade 2H nut
An A194 Grade 2H nut can always be substituted for an A563 Grade DH nut. In fact, the ASTM A563 nut specification specifically states that substituting an A194 Grade 2H is acceptable.
What does A194 mean?
The ASTM A194 specification covers carbon, alloy, and stainless steel nuts intended for use in high-pressure and/or high-temperature service. Unless otherwise specified, the American National Standard Heavy Hex Series (ANSI B 18.2.
What is 2HM?
ASTM A194 Grade 2HM is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon steel. Grade 2HM nuts can be produced by means of hot forging, cold forging or machining from heat treated bar stock.
What is ASTM A307?
ASTM A307 Grade A is a standard material specification for medium strength carbon steel fasteners specially bolts, studs and threaded rods for general purpose applications. Grade A is a heat treated carbon steel bolting material with minimum tensile requirement of 60 ksi and hardness range from 121 to 241 BHN.
What grade is a DH nut?
Nuts for Structural Applications—Grade DH. These nuts are designed to secure ASTM A325 bolts in structural joints. Also known as heavy hex nuts, they are about 10% wider and taller than standard hex nuts. Black-oxide steel nuts have a dark surface color and are mildly corrosion resistant in dry environments.
What material is A194?
carbon steel
ASTM A194 Grade 2H is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon steel. Grade 2H nuts can be produced by means of hot forging, cold forging or machining from heat treated bar stock.
Is A36 the same as A307?
What are the differences between A36 and A307? ASTM A36 is a steel (raw material) specification, while ASTM A307 is a fastener specification. In other words, once you take A36 round bar and cut it, thread it, bend it, forge a head on it, or otherwise process it and turn it into a fastener, it becomes an A307 bolt.
Is A307 the same as Grade 2?
You will often hear about A307 and Grade 2 bolts as being equivalent. While they are small differences they each are referred to as “low carbon” fasteners. A307 is an ASTM (industrial) spec, while Grade 2 is an SAE J429 Grade 2 (automotive) spec.
What is A563 DH?
ASTM A563 covers standard specifications for carbon and alloy steel nuts. Grade markings consists of the grade symbol “DH”. They are a common high strength nut used mainly in structural applications with F3125 Grades A325 and A490 bolting.
What does DH stand for with nut?
Nuts for Structural Applications—Grade DH. These nuts are designed to secure ASTM A325 bolts in structural joints. Also known as heavy hex nuts, they are about 10% wider and taller than standard hex nuts.
Is class 10.9 the same as Grade 8?
Class 10.9 is stronger than class 8.8. It is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8.