Hexagon Nuts With Large Widths Across Flats

Hexagon nuts with large widths across flats meet stringent standards such as ASTM A563, are corrosion-resistant and durable, and are commonly used in buildings and bridges. Xiaoguo® offers a wide variety of fasteners, including bolts, nuts, and screws, for use in a variety of industries.

Model:EN 780

Send Inquiry

Product Description

The hexagon nuts with large widths across flats often get strong surface treatments to keep them from rusting in harsh environments.

Hot-dip galvanizing (HDG) that follows ASTM A153 is common,it puts on a thick, tough zinc coating. Other options include mechanical zinc plating (usually with extra coatings), sherardizing, or inorganic zinc-rich coatings.

Dimensions and standards

These hexagon nuts with large widths across flats follow standard size specs, like ASME B18.2.2 or ISO 4032 for hex nuts.

They come with coarse (UNC) or fine (UNF) threads. Sizes usually go from 1/2" to 1-1/2" (M12 to M36), and sometimes even bigger.

Most are standard height, but heavy hex versions (ASME B18.2.2) are taller and have a bigger surface that touches the material. That makes them stronger for important structural uses.

hexagon nuts with large widths across flats parameter

Mon	M12	M16	M20	M22	M24	M27	M30	M36
P	1.75	2	2.5	2.5	3	3	3.5	4
e min	23.91	29.56	35.03	39.55	45.2	50.85	55.37	66.44
k max	10	13	16	18	19	22	24	29
k min	9.64	12.3	14.9	16.9	17.7	20.7	22.7	27.7
s max	22	27	32	36	41	46	50	60
s min	21.16	26.16	31	35	40	45	49	58.8

Achieve the specified preload

To get the right tightness as specified for these hexagon nuts with large widths across flats, you need to use torque wrenches that are calibrated or tensioning tools. Follow the instructions from the bolt/nut maker and relevant standards, like the RCSC Specification.

It’s usually important to lubricate the threads properly.

These nuts are made to handle the high stress when you tension them carefully,they won’t strip or bend. That way, the structural connection stays solid under the loads it’s designed for.

hexagon nuts with large widths across flats