Acorn Nuts

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One Piece Acorn Nuts        Two Piece Acorn Nuts        Properties

One Piece Hex Cap (Acorn) Nuts, Low Crown - SAE J483

Nominal Size or Basic Major Thread Diameter		F		G		A	H	Q	T	U
		Width Across Flats		Width Across Corners		Body Dia	Overall Height	Hex Height	Drill Depth	Full Thread
		Max	Min	Max	Min				Max	Min
6	.1380	.3125	.302	.361	.344	.30	.34	.16	.25	.16
8	.1640	.3125	.302	.361	.344	.30	.34	.16	.25	.16
10	.1900	.375	.362	.433	.413	.36	.41	.19	.28	.19
1/4	.2500	.4375	.428	.505	.488	.41	.47	.22	.34	.25
5/16	.3125	.5000	.489	.577	.557	.47	.53	.25	.41	.31
3/8	.3750	.5625	.551	.650	.628	.53	.62	.28	.45	.38
1/2	.5000	.7500	.736	.866	.840	.72	.81	.38	.59	.50
5/8	.6250	.9375	.922	1.083	1.051	.91	1.00	.47	.75	.62
3/4	.7500	1.0625	1.045	1.227	1.191	1.03	1.16	.53	.88	.75

Two Piece Hex Cap (Acorn) Nuts

Nominal Size or Basic Major Thread Diameter		F		G		H
		Width Across Flats		Width Across Corners		Overall Height
		Max	Min	Max	Min	Max	Min
4	.1120	.248	.225	-	-	.200	.177
5	.1250	.3125	.302	.361	.344	.260	.240
6	.1380	.3125	.302	.361	.344	.260	.240
8	.1640	.3125	.302	.361	.344	.260	.240
10	.1900	.3750	.362	.433	.413	.291	.271
12	.2160	.4375	.423	.505	.482	.338	.318
1/4	.2500	.4375	.423	.505	.482	.338	.318
5/16	.3125	.562	.545	.650	.621	.385	.365
3/8	.3750	.625	.607	.722	.692	.432	.412
7/16	.7375	.672	.657	.775	.750	.682	.648
1/2	.5000	.750	.736	.855	.840	.572	.552
9/16	.5625	.875	.861	1.010	.982	.875	.855
5/8	.6250	.938	.909	1.083	1.037	.807	.787
3/4	.7500	1.12	1.08	1.28	1.23	1.12	1.08

Acorn Nut Properties

Description	Steel: The low crown nut is usually made in two pieces, a hex nut and an acorn shaped top, zinc die cast to form the finished part. Stainless: Same design as the steel nit but made from an austenitic stainless alloy. Nuts may be one or two piece.
Applications & Advantages	They serve two main purposes: 1) As decorative pieces 2) As cover for projecting threads.
Material	Steel: Nuts are made from a low carbon steel which conforms to the following chemical composition requirements: Sulfur: .23% max Phosphorus: .12% max Carbon: .47% max Stainless: 304L or equivalent stainless
Plating	See plating page for plating information of steel nuts.

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Open End Acorn Cap Nuts

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