Hex Nuts

Hex nuts are also called finished hex nuts. These are available as ASTM A563-A and tend to be compatible with a range of low carbon steel bolts such as SAE grade 2, ASTM A307, ASTM F1554 grade 36 & AASHTO M183. Besides, we supply SAE Grade 5 and Grade 8 nuts in finished pattern. Since hot-dip galvanizing normally adds 2.2 – 5 mils thickness to the threaded portion of a fastener, our galvanized hex nuts usually get tapped oversize in order to balance the corrosion resistant coating of the bolts.

Stock

Diameters: 3/8″ – 1-1/2″
Grade: ASTM A563
Origin: Domestic and import
Finish: Plain and hot-dip galvanized

Dimensions

Click to show drawing
Nominal SizeFCHPart Numbers
Width Across FlatsWidth Across CornersThicknessDomesticImport
BasicMaxMinMaxMinBasicMaxMinPlainGalvanizedPlainGalvanized
12340.7500.7360.8660.8407160.4480.42716270162711170111702
5815160.9380.9221.0831.05135640.5590.53516272162731170311704
341181.1251.0881.2991.24041640.6650.61716274162751170511706
7815161.3121.2691.5161.447340.7760.72416276162771170711708
11121.5001.4501.7321.65355640.8870.83116278162791170911710
118111161.6881.6311.9491.85931320.9990.93916280162811171111712
1141781.8751.8122.1652.06611161.0941.03016282162831171311714
13821162.0621.9942.3822.273111641.2061.1381171511716
1122142.2502.1752.5982.48019321.3171.24516286162871171711718

Dimensions per ASME B18.2.2 1987 (1999)