3/8 1/2 ASTM A193 A194 Hex Metal Thin Nut B7 B8 GR 8 8M ASME B16.5 Hexagon Metal Nut
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3/8 1/2 ASTM A193 A194 Hex Metal Thin Nut B7 B8 GR 8 8M ASME B16.5
Hexagon Metal Nut
Product Description:
Hexagonal nuts and screws, bolts, screws used in conjunction with each other, to connect the role of fastening machine parts. One of the most widely used by the 1 type of six nuts, C nuts for surface roughness, the precision requirements of the machine, equipment or structure is not high; A and B nuts for the surface is more polished, the precision requirements of the machine, equipment or structure. 2 type hexagonal nut thickness M is thicker, more often used for often need to be mounted and dismounted on the occasion. Thin hexagonal nuts are thinner in thickness M, and are mostly used on occasions where the surface space of the connected machine parts is restricted.
Hexagonal nuts in accordance with the nominal thickness is divided into I type, II type and thin three kinds of nuts above level 8 is divided into 1 type and II type two types. I type hexagonal nuts are the most widely used, 1 type of nut is divided into A, B, C three levels, of which A and B level nuts are suitable for surface roughness is small, the precision requirements of the machine, equipment and structure of the high level, while the C level nuts are used for the surface of the rougher, the precision requirements of the machine, equipment or structure; C level nuts for rough surface, the precision requirements of the high level. The thickness of type 2 hexagonal nuts is thicker, and they are mostly used in the occasions that need to be assembled and disassembled frequently.
The design of hexagonal nuts gives them good torque transmission
capacity and can withstand large axial and radial loads.
1. Construction:In the construction industry, hexagonal nuts are
commonly used in the connection of steel structures, steel frames
and bridges to ensure the stability and safety between structural
components.
2. Mechanical engineering: In the field of mechanical engineering,
hexagonal nuts are used to fix various parts of mechanical
equipment, such as automobiles, ships, aviation and machine tools,
etc., in order to ensure the normal operation and long-term
stability of the equipment.
3.Electronics:Some electronic products use snap screws, which are
actually a special type of hexagonal bolt, to ensure the tightness
and stability of electronic components.
4. Home maintenance:In daily life, hexagon nuts are also often used
in furniture assembly, bicycle repair and other home maintenance
work.
In addition, hexagon nuts have a variety of classifications and
specifications to meet different engineering needs. For example,
category 1 hexagon nuts have single-sided chamfers, while category
3 hexagon nuts have double-sided chamfers. Pocket nuts, which have
screw holes that do not run through their profile, are commonly
used for decorative purposes, especially in applications such as
playground equipment where the unterminated end of the bolt may be
a hazard. Butterfly nuts, on the other hand, are commonly used in
applications where space is limited, such as on automobile wheels.
Applications
Material Properties
The 3/8 and 1/2-inch ASTM A193 A194 heavy-duty hex nuts and washers
are made from high-strength alloy steels such as B7 and B8, which
provide exceptional tensile strength and fatigue resistance. These
materials are specially designed to handle extreme pressures and
high temperatures, making them ideal for the oil and gas industries
and high-performance engineering applications.
Advantages
1. High Strength and Durability: B7 and B8 materials offer very
high tensile strength, making these nuts and washers capable of
withstanding heavy loads and high-pressure environments.
2. Excellent High-Temperature Resistance: These fasteners are
engineered to perform well in high-temperature environments,
maintaining their integrity and preventing failure even under
intense heat.
3. Corrosion Resistance: B8 stainless steel offers excellent
resistance to oxidation and corrosion, particularly in
high-pressure and high-temperature conditions found in oil
refineries and chemical plants.
4. Reliable Performance: Designed to meet ASTM A193 and A194
standards, these nuts and washers ensure a high level of
performance and reliability in demanding applications.
Applications
These heavy-duty hex nuts and washers are commonly used in critical
applications such as power plants, refineries, petrochemical
industries, and natural gas infrastructure. The B7 steel is
well-suited for high-pressure, high-temperature environments, while
the B8 stainless steel variant is ideal for applications where
corrosion resistance is crucial.
| No. | C% | Cr% | Ni % | Mo % |
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
| 304L | 0.03 | 18-20 | 8-12 | / |
| 316L | 0.03 | 16-18 | 10-14 | 2-3 |
| 321 | 0.08 | 17-19 | 9-12 | / |
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3/8 1/2 ASTM A193 A194 Hex Metal Thin Nut B7 B8 GR 8 8M ASME B16.5 Hexagon Metal Nut
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