Structural fasteners (in)

Heavy Hex Bolts

Size 1 2	Diameter	Flat Width	Head Height	Thread Length
1/2	0.500	0.875	0.323	1.000
5/8	0.625	1.063	0.403	1.250
3/4	0.750	1.250	0.483	1.380
7/8	0.875	1.438	0.563	1.500
1	1.000	1.625	0.627	1.750
1 1/8	1.125	1.813	0.718	2.000
1 1/4	1.250	2.000	0.813	2.000
1 3/8	1.375	2.188	0.878	2.250
1 1/2	1.500	2.375	0.974	2.250

Material specifications:

• A325
• A490

Heavy Hex Nuts

Size 1 2	Diameter	Flat Width	Thickness
1/2	0.500	0.875	0.504
5/8	0.625	1.063	0.631
3/4	0.750	1.250	0.758
7/8	0.875	1.438	0.885
1	1.000	1.625	1.012
1 1/8	1.125	1.813	1.136
1 1/4	1.250	2.000	1.215
1 3/8	1.375	2.188	1.378
1 1/2	1.500	2.375	1.505

Material specifications: A563

Flat Washers

Size 1 2	ID	OD	Thickness
1/2	0.531	1.063	0.097
5/8	0.688	1.313	0.122
3/4	0.813	1.469	0.122
7/8	0.938	1.750	0.136
1	1.125	2.000	0.136
1 1/8	1.250	2.250	0.136
1 1/4	1.375	2.500	0.136
1 3/8	1.500	2.750	0.136
1 1/2	1.625	3.000	0.136

Material specification: F436

Footnotes

1. Dimensions per ASME B18.2.6-1996 in inches. ↩ ↩² ↩³

2. Oberg, Jones, Horton, Ryffel, McCauley. (2020). Machinery’s Handbook 31 Digital Edition. https://ebooks.industrialpress.com/pdfreader/machinerys-handbook-digital-edition-31st ↩ ↩² ↩³