Structural Bolts

Heavy hex structural bolts are designed for steel-to-steel structural connections. Consequently, they are typically very short. The A325 and A490 specifications are not intended for general applications, including anchor bolts. In these applications, substitutions of A449 for A325 and A354 grade BD for A490 should be considered.

MANUFACTURING

Portland Bolt manufactures A325 and A490 heavy hex structural bolts from 1/2” diameter through 1-1/2” diameter, typically in lengths longer than those which are normally available in the marketplace.

STOCK

Grade: A325 type 1 Diameters: 1/2 - 1”
Lengths: 5” maximum
Origin: Domestic
Finish: Black and hot-dip galvanized

Bolt Length Tolerance

Nominal Bolt Size, in.	1/2	5/8	3/4 thru 1	1-1/8 thru 1-1/2
Nominal Bolt Length	Tolerance of Length
Thru 6 in. Over 6 in.	-0.12 -0.19	-0.12 -0.25	-0.19 -0.25	-0.25 -0.25

Bolt Diameter	D	F			C		H			T
	Body Diameter	Width Across Flats			Width Across Corners		Height			Thread Length
	Max	Basic	Max	Min	Max	Min	Basic	Max	Min	Basic
1/2	0.515	7/8	0.875	0.850	1.010	0.969	5/16	0.323	0.302	1.00
5/8	0.642	1-1/16	1.062	1.031	1.227	1.175	25/64	0.403	0.378	1.25
3/4	0.768	1-1/4	1.250	1.212	1.443	1.383	15/32	0.483	0.455	1.38
7/8	0.895	1-7/16	1.438	1.394	1.660	1.589	35/64	0.563	0.531	1.50
1	1.022	1-5/8	1.625	1.575	1.876	1.796	39/64	0.627	0.591	1.75
1-1/8	1.149	1-13/16	1.812	1.756	2.093	2.002	11/16	0.718	0.658	2.00
1-1/4	1.277	2	2.00	1.938	2.309	2.209	25/32	0.813	0.749	2.00
1-3/8	1.404	2-3/16	2.188	2.119	2.526	2.416	27/32	0.878	0.810	2.25
1-1/2	1.531	2-3/8	2.375	2.300	2.742	2.622	15/16	0.974	0.902	2.25

Dimensions per ASME B18.2.6 2003

Specifications:
- ASTM A325
- ASTM A490
Technical:
- Are A325 structural bolts available larger than 1-1/2"?
- Anchor bolts and A325
Industrial Applications:
- Steel Fabrication
- Light Pole