Included herein are the detailed general and dimensional specifications applicable to high hex nuts. All general specifications not shown here shall conform with those applicable to hex thick nuts and hex thick slotted nuts appearing in ASME B18.2.2. High hex nuts are primarily intended for use in automotive and other ground-based vehicles and industrial equipment where a long length of hexagon is required for wrenching purposes.

Rationale

Section 2.1.1—Deleted ANSI as standards are now ASME.

- Added ASME B1.1 Unified Inch Screw Threads (UN and UNR Thread Form)

Section 3.1.1—Added ASME B1.1 to ensure the reader understands what specification threads must conform and deleted reference to Table 1 and Figure 1.

Section 3.1.3—Changed max. countersink diameter to correspond with ASME B18.2.2.

Table 1—Changed Max Width Across Flats F dimensions to correspond with ASME B18.2.2.