Cold heading Service

ANSI/ASME B18.2.2 Hex Nuts Manufacturer in China

Ningbo Teng Qi Fasteners Co., Ltd is a leading hex bolts manufacturer in China. The ANSI/ASME B18.2.2 standard specifies the dimensions and requirements for hex nuts. These nuts are designed to be used with externally threaded fasteners, such as bolts and screws, to create a secure and reliable fastening connection. The standard covers various types of hex nuts, including regular (finished), heavy, and machine screw nuts.

Specification of ANSI/ASME B18.2.2 Hex Nuts:

Product nameANSI/ASME B18.2.2 Hex Nuts
ThreadImperial thread
ClassSAE J995 GR.2/5/8
Manufacturing Processwire drawing, cold heading/hot forging, thread rolling, heat treatment, surface treatment
Surface treatmentBlack Oxide Coating/Zinc Plating (Electroplating)/Hot-Dip Galvanizing/Mechanical Galvanizing/Dacromet Coating/Painting or Powder Coating
Application IndustryConstruction/Machinery/Automotive/Infrastructure/Electrical and Electronics/Furniture/Marine and Offshore

 Mechanical and properties:

GradeNominal Size, inchesProofload, UNC and UN 8 Threads, psiRockwell Hardness
21/4 thru 1-1/290,000C32 Max
51/4 thru 1120,000C32 Max
Over 1 thru 1-1/2105,000C32 Max
81/4 thru 5/8150,000C24-C32
Over 5/8 thru 1150,000C26-C34
Over 1 thru 1-1/2150,000C26-C36

Chemical Composition:

GradeCarbon, %Phosphorus, %Manganese, %Sulfur, %
20.47 max0.120 max-0.15 max
50.55 max0.050 max0.30 min0.15 max
80.55 max0.040 max0.30 min0.05 max

Click to check dimension information of ANSI/ASME B18.2.2 Hex Nuts:

ANSI/ASME B18.2.2 hex nut dimension chart

Manufacturing quality control of ANSI/ASME B18.2.2 Nuts:

In a world where connections matter, Ningbo Teng Qi Fasteners is more than just a fasteners supplier and manufacturer. We are architects of stability, builders of relationships, and champions of your success. From skyscrapers that reach for the sky to machines that power industries, our fasteners form the backbone of progress. When you choose Ningbo Teng Qi Fasteners, you choose unwavering quality, exceptional service, and a partner who understands that every fastener holds a piece of your vision.

Control MethodDetail
Material Inspection:Verify the material's composition, heat treatment, and quality upon receipt. Conduct metallurgical analysis to ensure the material properties meet the standards.
Process Control:Implement strict process control measures for heat treatment, machining, threading, and any other manufacturing steps. Maintain consistent process parameters to ensure uniform quality.
Inspection Points:Introduce inspection points at various stages of manufacturing to check for defects, dimensions, and quality. Inspect threading, dimensions, surface finish, and other critical parameters.
Sampling and Testing:Regularly sample products for testing, such as tensile testing, hardness testing, and metallurgical analysis, to ensure they meet the required specifications.
Thread Inspection:Thoroughly inspect threading using proper thread gauges to ensure accurate dimensions and fit with mating components.
Traceability:Implement a traceability system to track each fasteners journey from raw material to final product. This aids in accountability and recalls if necessary.