ASME B18.2.2 hex nuts in this controlled TT BOLT catalog are inch-series regular hex nuts from Table 1.1.1-5. The catalog covers 14 nominal sizes from 1/4 in through 1-1/2 in and 56 controlled grade-and-finish variants.
ASME B18.2.2 hex nut selection guide
Use diameter, UNC or 8UN thread, ASTM A563 Grade A or B and finish to select the required product. Every product page provides the dimensional limits and theoretical mass for that exact variant. Jam, heavy hex, square, flange, coupling and machine-screw nuts are separate product forms and are not mixed into this category.
ASME B18.2.2 Hex Nut — ASTM A563 Grade A Nominal size: 5/16 Thread: UNC 18 TPI Thread direction: Right Hand Width across flats: 0.489–0.5 in Width across corners: 0.557–0.577 in Nut height: 0.258–0.273 in Material specification: ASTM A563/A563M Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 5.248 g/pc
ASME B18.2.2 Hex Nut — ASTM A563 Grade A Nominal size: 5/8 Thread: UNC 11 TPI Thread direction: Right Hand Width across flats: 0.922–0.938 in Width across corners: 1.051–1.083 in Nut height: 0.535–0.559 in Material specification: ASTM A563/A563M Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 35.512 g/pc
ASME B18.2.2 Hex Nut — ASTM A563 Grade A Nominal size: 7/16 Thread: UNC 14 TPI Thread direction: Right Hand Width across flats: 0.675–0.688 in Width across corners: 0.768–0.794 in Nut height: 0.365–0.385 in Material specification: ASTM A563/A563M Material: Carbon Steel Finish: Hot Dip Galvanized Estimated mass: 13.763 g/pc
