ASTM A453 Grade 660 Nuts

ASTM A453 Grade 660 Nuts

ASTM A453 Grade 660 NutsASTM A453 Grade 660 Nuts are high tensile stainless steel fasteners, used with grade 660 bolts. Boltport is a manufacturer and supplier of ASTM A453 grade 660 nuts in metric and imperial sizes. We offer various types of nuts in grade 660 and most common among are hex nuts, heavy hex nuts, thin lock nuts and square nuts. A453 grade 660 nuts are manufactured by hot forging and cold forging from a suitable bar stock. Alloy 286 is starting raw material used for producing grade 660 nuts.

Find information on ASTM a453 grade 660 nuts, types of nuts, tensile class, chemical composition, mechanical properties, heat treatment, stress rupture testing, etc.

For Quick quotation on a453 grade 660 nuts please send us enquiry on info@boltport.com

ASTM A453 Grade 660 Chemical Compositon

Elements Range Product Variation, Over or UnderB
Carbon 0.08 max % 0.01 over
Manganese 2.00 max % 0.04
Phosphorus 0.040 max % 0.005 over
Sulfur 0.030 max % 0.005 over
Silicon 1.00 max % 0.05
Nickel 24.0 - 27.0 % 0.20
Chromium 13.5 - 16.00 % 0.20
Molybdenum 1.00 - 1.50 0.05
Tungsten - -
Tantalum 1.90 - 2.35 % 0.05
ColumbiumA ... ...
Aluminum 0.35 max % 0.05 over
Vanadium 0.10 - 0.50 % 0.03
Boron 0.001 - 0.010 % 0.0004 under to 0.0001 over
Copper - 0.15

ASTM A453 Grade 660 Heat Treatment

Grade Class Solutions Treatment Hardening Treatment
660 A 1650±25°F[900±14°C], hold 2h, min, and liquid quench 1325±25°F[720±14°C], hold 16h, air cool
660 B 1800±25°F[900±14°C], hold 1h, min, and liquid quench 1325±25°F[720±14°C], hold 16h, air cool
660 C 1800±25°F[900±14°C], hold 1h, min, and oil quench 1425±25°F[775±14°C], hold 16h, air cool
1200±25°F[650±14°C], hold 16h, air cool
660 D 1650±25°F[900±14°C], hold 2h min, and liquid quench OR
1800±25°F[980±14°C], hold 1h min, and liquid quench
1325±25°F[720±14°C], hold 16h, air cool
If necessary to achieve properties, second age:
1200±25°F[650±14°C], hold 16h, air cool
ASTM A453 Grade 660 Stud Bolts

Other ASTM A453 Grade 660 Products


Fastener Coatings

Nut Dimension Standards