ASTM A194 covers carbon steel, alloy steel, and stainless steel nuts for bolts in high pressure or high temperature service. Grade markings consists of both the grade symbol "2H" and the manufacturer's identification mark. They are a common high strength nut used with many different bolting grades, including A193 Grade B7, F3125 Grades A325 and A490, as well as with F1554 Grade 105 anchor bolts and studs. Dimensional specifications are governed by ASME B18.2.2. Heavy hex nuts provide increased bearing surface area over finished nuts such as J995 Grade 5 nuts.High temperature applications and high-pressure conditions require the use of a 2H hex nut. Typical 2H hex nut applications include: • Pressure valves and vessels • Pipelines • Pressure controls • Chemical, gasoline, and oil storage systems • Natural gas and steam storage • Transmission of chemicals, gasoline, oil, steam, and natural gas

FAQ

1) What is your main products?

Threaded rod, Hex bolt, Hex Nut, Flat washer, Screws, Anchors, Blind rivet, etc

2) Do you have MOQ for your product?

It depends on sizes, Usually 200 kgs to 1000 kgs.

3) How about your delivery time?

From 7 days to 75 days, depends on your sizes and quantity.

4) What is your payment term?

T/T, LC, DP, etc.

5)  Can you send me a price list?

Due to a lot of kinds of fasteners, we quote prices accoridng to sizes, quantity, packing only.

6) Can you provide samples?

Sure, free sampls will be provided

High Tensile Black Hex Nuts is a mechanical device of carbon steel or stainless steel , internal threaded, commonly M4-64 in diameter, with galvanized hot dip coating, electric coating, powder coating and so on.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. ASTM A194 specification covers requirements for chemical composition, heat treatment, hardness, proof load, etc., for Grade 2H nuts.

roduct name  HEAVY HEX NUTS Standard ASTM A194 ASME18.2.2 Size 1/2"-4" Class 2H Finish Z.P., B.Z.P.,PLAIN, BLACK, H.D.G., dacromet, geomet, nickle plated, mechanical zinc plated,ect. Packing bulk/boxes in cartons, bulk in poly bags/-buckets, etc Pallet solid wood pallet, plywood pallet, ton box/bag, etc. Mechanical Properties: A194-2H