A286 Torx Screws

A286 (1.4980) Torx Screws, also known as Alloy 660 Torx Screws are stainless steel alloy which contains iron, nickel and chromium. A286 Torx Screws are known for their high strength, creep resistance and oxidation resistance at elevated temperatures once age hardened.  As a result, A286 Torx Screws provide high levels of strength from room temperature up to about 1300°F (700°C).

A286 Torx Screws are also mildly corrosion resistant. While they should not be used for strong acid environments, they provide excellent oxidation resistance up to 1500°F (815°C) in conditions that would typically be found in high temperature exhaust streams. Because A286 Torx Screws are used in high temperature applications where performance is critical, we can provide fasteners to ASTM A453 Grade 660 in order to ensure accurate standards for tensile and stress rupture properties.

• A286 / Alloy 660 for excellent high temperature oxidation resistance

• Excellent high temperature oxidation resistance to 1300°F / 700°C

• Maintains high strength at elevated temperatures

• Specs & heat treatments

• A286 Chemistry

• ASTM A453 Grade 660 and ASTM F2281

• A286 FAQ of the Week

• A286 Datasheet

Applications

Because of the properties of Alloy 660 / A286, these fasteners are often found in high temperature engine, manifold, exhaust and turbine applications as well as off-shore oil & gas applications. In addition, A286 / Alloy 660 is also non-magnetic and finds a niche in non-magnetic cryogenic equipment.

Resources: A286 Torque Specs

A286 Screws Types: 12 Point Screws, Button Head Cap Screws, Flat Head Screws, Hex Cap Screws, Pan Head Screws, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws, Torx Screws, Vented Screws

Custom Availability

• Diameter sizes:  Standard #00 – 4” in diameter / Metric M1.2 – M100

• Threads: UNC, UNF, UNJ, UNR, Rolled,Cut

• Minimum Volume – Typically 10pcs, depending on size and stock

• Custom to print

A286 Fastener Styles

A286 Screws

A286 Bolts

A286 Nuts

A286 Studs & Threaded Rods

Studs	A286 studs are fully threaded or partially threaded and made to custom lengths.	• ASME B18.31.2 • DIN 976
Threaded Rod	A286 threaded rod or all thread are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 feet of length.	• ASME B1.1 • DIN 975
Weld Studs	A286 weld studs are available in both arc or capacitor discharge (CD) styles. Weld studs provide an extremely secure fastening solution when one side of the stud needs to be permanently fix to a part and the other side with the threads accessible.

A286 Washers 

ASTM A453 Grade 660

Material specification ASTM A453 Grade 660 applies to bolts, studs, nuts and other fasteners. It ensures fasteners meet strength standards for use in high temperature bolting applications. ASTM A453 Grade 660 is classified into 4 property classes / heat treatments: A, B, C & D, each designated with different tensile and stress rupture properties. The most common of the ASTM 453 classes are class A or D. The grades A, B and C all have the same minimum tensile strength and minimum yield strength of 130ksi and 85ksi respectively. However grade D has a significantly better yield with a min tensile of 130ksi and a min yield of 105ksi.

Additional A286 / Alloy 660 Specifications, Cold Working & Heat Treatments (1.4980)

AMS A286 / Alloy 660 Heat Treatments

By AMS numbers, the most common for A286 / Alloy 660 is AMS 5737 (same as Grade A) and then AMS 5732 (same as Grade B).

A286 / Alloy 660 Cold Worked Fasteners

For additional strength, A286 could be aged and cold worked to achieve a min ultimate tensile strength of 160ksi upon request.

Additional Specifications

UNS S66286, ASTM A453, AMS 5525, AMS 5726, AMS 5732, AMS 5737, AMS 5804, EN 1.4980, GE B50T1181, GE B50T12, GE B50T81, Werkstoff 1.4980, ASTM F2281

A286 / Alloy 660 Chemistry

Mechanical Properties