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ASTM A194 Grade 8 Heavy Hex Nuts Wholesale

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ASTM A194 Grade 8 Heavy Hex Nuts Manufacturers

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Introduction

A194 Grade 8 Heavy Hex Nuts are specifically designed to mate with high-strength, high-temperature stud bolts, such as ASTM A193 B8 (Stainless Steel 304). These nuts are made from AISI 304 Stainless Steel (Grade 8) and are widely used in critical high-pressure, high-temperature applications like refinery valves, flanges, and piping systems. The heavy pattern provides increased bearing surface area and thread engagement for maximum joint integrity.

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Specification

Nut Grade

ASTM A194 Grade 8
Material

AISI 304 Stainless Steel
Configuration

Heavy Hex
Application Temp.

Up to 1500°F (815°C)
Industry Use

Petrochemical, Power Generation

Applications

  • Pipe Flanges: Essential for secure, leak-proof connections in high-pressure oil and gas pipelines.

  • Pressure Vessels: Used on tanks and vessels operating at elevated temperatures.

  • Valves and Pumps: Fastening critical components in chemical processing plants.

  • Steam Lines: Required for reliability in high-temperature steam distribution systems.

Advantages

  • High Temperature Stability: Maintains mechanical properties and creep resistance under extreme heat.

  • Excellent Corrosion Resistance: Grade 8 (304 SS) resists a wide range of corrosive media.

  • Increased Bearing Area: The heavy hex pattern distributes load over a larger area, reducing potential for material crushing.

  • MTR Certification: All nuts are supplied with certified Mill Test Reports ensuring full compliance for critical applications.

Payment & Shipping

For specialized fasteners like these, we offer customizable consignment inventory arrangements and accept Escrow Services for new clients. Fasteners are often coated with anti-seize compound before packaging to prevent galling and are shipped in heavy-duty wooden crates to prevent movement.

FAQ

  • Q: What stud bolt is typically used with A194 Grade 8 nuts?
  • A: The most common companion is the ASTM A193 Grade B8 or B8M (for 316 Stainless Steel), as they have complementary chemical and mechanical properties suitable for demanding service conditions.
  • Q: Why are they designated as "Heavy Hex"?
  • A: The term "Heavy Hex" indicates a larger width across the flats (WAF) compared to standard hex nuts. This larger size allows for easier application of the high torque required to properly tension the high-strength stud bolts they are designed to be used with.

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Steady-Ind

Steady-Ind - Pursue quality and cast high-quality goods.

STEADY manufactures over a thousands different types of blind rivet nut in steel,aluminium and stainless steel,thread size from M3-M16 in metric and UNC #6-32 to UNC 1/2-13 in inch. High advantage in stainless steel blind rivets both for open and sealed type, mutigrip,monobolt and other structural rivets. As China ASTM A194 Grade 8 Heavy Hex Nuts Manufacturers and ASTM A194 Grade 8 Heavy Hex Nuts Factory, we focus on "one stop shopping" and with advantage of large production capacity , consistent quality, competitive prices, punctual delivery and goods serverices before and after sales, STEADY has become one of the leading blind fasteners manufacuture & supplier in Asia.

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Recommended LINS: ASTM A307 Grade A Hex Bolts ASTM F436 Hardened Washers Hexagon Thin Nuts DIN 439 Full Thread Grade 8.8 Hex Bolts