Heavy hex nuts
A194 2H, Grade 8, and Grade 8M heavy hex nuts, with plain and specified finish options.

Heavy hex nuts, defined by the order.
Complete your bolting requirement with heavy hex nuts specified for the assembly. The catalog includes alloy steel and stainless grades. Confirm material compatibility, strength requirements, thread class, and coating allowance in the order requirements.
- Plain 2H, Grade 8, and Grade 8M listings
- TFE blue and cadmium-plated 2H options
- Thread series, dimensions, and finish to specification
Specify material grade and condition, dimensions, thread series/class, quantity, finish, required delivery, and documentation.
Heavy hex nut range
| Detail | Available range |
|---|---|
| Grades | A194 2H, Grade 8 and Grade 8M |
| A194 2H finishes | Plain, TFE blue, cadmium plated |
| Diameter | 5/8" through 4" |
| Dimensions | To the customer’s specification |
Define the part. Align the requirement.
Heavy hex nuts should be specified as part of the complete bolted assembly. Cyclone’s published catalog includes ASTM A194 2H, Grade 8 and Grade 8M configurations. State the companion stud or bolt, required thread fit and finish so the team can review matching hardware and documentation.
Published grades
A194 2H, Grade 8 and Grade 8M appear in the catalog. Identify the required grade, class or condition and the governing specification revision in the order.
Diameter range
Heavy hex nuts are available in nominal diameters from 5/8 inch through 4 inches. Provide the required dimensions, grade and quantity with the RFQ; the team confirms availability and delivery.
Finish options
Published 2H listings include plain, TFE blue and cadmium-plated options. Specify the complete finish requirement and any thread allowance or inspection requirements.
Receiving requirements
Identify required marking, material reports, lot traceability, thread gaging and packaging. Nut and stud compatibility must follow the responsible engineer’s assembly specification.
Questions before you quote
Can nuts be supplied as part of a stud set?
Yes. Identify the stud specification and number of nuts per set, then list material, finish and documentation requirements for each component.
Are Grade 8 and Grade 8M the same nut?
They are separate A194 grade designations. Order the exact grade, class and condition required by the assembly specification; do not substitute on appearance.
Does the range table show live stock?
No. The table summarizes the product range. The team confirms availability, order quantity and delivery during quote review.