Hex Bolts Inches

Reference data and engineering information about hex bolts inches for material properties applications.

hexboltsinches

Overview

Engineering reference data for Hex Bolts Inches in material science and properties.

$\sigma = \frac{F}{A}$

Force per unit area.

$\varepsilon = \frac{\Delta L}{L_0}$

Change in length per original length.

$\sigma = E \varepsilon$

Stress proportional to strain in elastic region.

$\Delta L = \alpha L_0 \Delta T$

Length change due to temperature.

Symbol	Description	Unit
$\sigma$	Stress	Pa
$\varepsilon$	Strain	—
$E$	Young's modulus	Pa
$\alpha$	Thermal expansion coefficient	1/°C
$\Delta T$	Temperature change	°C

The following table contains dimensional specifications for US hex bolts in inches, based on ASME standards.

24 rows

Dimensional specifications for US hex bolts in inches.
Nominal Size(in)	Outside Diameter (max)(in)	Outside Diameter (min)(in)	Width Across Flats(in)
5/16	0.324	0.298	0.5
3/8	0.388	0.36	0.5625
7/16	0.452	0.421	0.625
1/2	0.515	0.482	0.75
5/8	0.642	0.605	0.9375
3/4	0.768	0.729	1.125
7/8	0.895	0.852	1.3125
1	1.022	0.976	1.5
1 1/8	1.149	1.098	1.6875
1 1/4	1.277	1.223	1.875
1 3/8	1.404	1.345	2.0625
1 1/2	1.531	1.47	2.25
1 5/8	1.658	1.591	2.4375
1 3/4	1.785	1.716	2.625
1 7/8	1.912	1.839	2.8125
2	2.039	1.964	3
2 1/4	2.305	2.214	3.375
2 1/2	2.559	2.461	3.75
2 3/4	2.827	2.711	4.125
3	3.081	2.961	4.5
3 1/4	3.335	3.21	4.875
3 1/2	3.589	3.461	5.25
3 3/4	3.858	3.726	5.625
4	4.111	3.975	6

Source: engineeringtoolbox.com

This data is derived from the following American National Standards Institute (ANSI) and American Society of Mechanical Engineers (ASME) standards:

*ASME B18.2.1: Covers Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series).
ANSI/ASME B18.2.3M: Covers Hex Bolts - Metric.
UNC and UNF: Specifies Unified Inch Screw Threads.