Hex Nuts

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How we deliver:

Hex nuts, also known as finished hex nuts, are commonly supplied to ASTM A563 Grade A specifications. They are compatible with a wide range of low carbon steel bolts, including SAE Grade 2, ASTM A307, ASTM F1554 Grade 36, and AASHTO M183. In addition, we also supply SAE Grade 5 and Grade 8 nuts in the finished hex pattern.

Since hot-dip galvanizing adds approximately 2.2 to 5 mils of thickness to the threaded portion of a fastener, all of our galvanized hex nuts are tapped oversize to compensate for the corrosion-resistant coating and ensure proper thread fit.

Stock

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

Dimensions

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Nominal Size	F			C		H			Part Numbers
	Width Across Flats			Width Across Corners		Thickness			Domestic		Import
	Basic	Max	Min	Max	Min	Basic	Max	Min	Plain	Galvanized	Plain	Galvanized
¹⁄₂	³⁄₄	0.750	0.736	0.866	0.840	⁷⁄₁₆	0.448	0.427	16270	16271	11701	11702
⁵⁄₈	¹⁵⁄₁₆	0.938	0.922	1.083	1.051	³⁵⁄₆₄	0.559	0.535	16272	16273	11703	11704
³⁄₄	1¹⁄₈	1.125	1.088	1.299	1.240	⁴¹⁄₆₄	0.665	0.617	16274	16275	11705	11706
⁷⁄₈	1⁵⁄₁₆	1.312	1.269	1.516	1.447	³⁄₄	0.776	0.724	16276	16277	11707	11708
1	1¹⁄₂	1.500	1.450	1.732	1.653	⁵⁵⁄₆₄	0.887	0.831	16278	16279	11709	11710
1¹⁄₈	1¹¹⁄₁₆	1.688	1.631	1.949	1.859	³¹⁄₃₂	0.999	0.939	16280	16281	11711	11712
1¹⁄₄	1⁷⁄₈	1.875	1.812	2.165	2.066	1¹⁄₁₆	1.094	1.030	16282	16283	11713	11714
1³⁄₈	2¹⁄₁₆	2.062	1.994	2.382	2.273	1¹¹⁄₆₄	1.206	1.138	–	–	11715	11716
1¹⁄₂	2¹⁄₄	2.250	2.175	2.598	2.480	1⁹⁄₃₂	1.317	1.245	16286	16287	11717	11718
Dimensions per ASME B18.2.2 1987 (1999)