Home > Other Material > ASTM A 453 GR 660 Class D Nuts
ASTM A453 Grade 660 Class D nuts are premium fasteners known for exceptional strength and corrosion resistance, suitable for harsh environments. These nuts are made of high-quality alloy steel to withstand heat high and heavy load edges, making them ideal for critical applications in the petrochemical, energy generation and offshore drilling industries. By adhering to stringent ASTM standards, reliable performance is ensured and lasts a long time. Their improved construction and superior mechanical properties make ASTM A453 Grade 660 Class D nuts an excellent choice for reinforcing bolts and joints under demanding industrial conditions.
|
Material |
Dimensions |
Standards |
Size
|
Length |
|
ASTM A453 GR 660 CLASS D Heavy Hex Nut
|
ASME B18.2.1, B18.3
|
ASTM, ASME |
M 02 to M 160
|
3 mm to 200 mm
|
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
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We offer These ASTM A 453 GR 660 Class D Bolts as per DIN, ISO, JIS or ANSI Standard.
ASTM A 453 GR 660 Class D Nuts applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
ASTM A453 Grade 660 Class D nuts are generally resistant to galvanic corrosion due to their alloy composition, which includes corrosion-resistant elements like nickel and chromium. These elements form protective oxide layers, reducing the risk of galvanic reactions when used with dissimilar metals. However, proper material selection and surface treatments should be considered in environments prone to galvanic corrosion, such as marine settings, to further enhance their resistance.
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