Heavy Hex Structural Bolts

Product Description:

Steel screws that meet ASTM A325 regulations for structural joints, such as mating I-beams and scaffolding, are the most commonly used heavy hex head screws. These screws are made from materials that meet ASTM F3125 specifications for quality. The dimensions of these screws adhere to ASME B18.2.6 specifications. Length of these screws is measured from under the head.

Screws with partial threading are designed with both threaded and unthreaded areas, which makes them ideal for strengthening joints that may be exposed to lateral forces. By incorporating a section of unthreaded grip, these screws provide extra strength where it is needed most, ensuring a reliable and secure connection. With their precision engineering, partially threaded screws are a versatile option for a variety of construction and DIY projects where strength and durability are essential.

For optimal protection against corrosion, choose hot-dipped galvanized screws which come with a dense coating. For best results, always pair these screws with hot-dipped galvanized steel nuts to ensure compatibility.

Product Drawing:

Heavy hex structural bolts
ASTM A325/ A490 ASME/ANSI B18.2.6-2011
d(inch)		1/2	5/8	3/4	7/8	1	1-1/8	1-1/4	1-3/8	1-1/2
P(inch)		13	11	10	9	8	7	7	6	6
ds(inch)	min	0.482	0.605	0.729	0.852	0.976	1.098	1.223	1.345	1.47
	max	0.515	0.642	0.768	0.895	1.022	1.149	1.277	1.404	1.531
s(inch)	Nom	7/8	1-1/16	1-1/4	1-7/16	1-5/8	1-13/16	2	2-3/16	2-3/8
	min	0.85	1.031	1.212	1.394	1.575	1.756	1.938	2.119	2.3
	max	0.875	1.062	1.25	1.438	1.625	1.812	2	2.188	2.375
e(inch)	min	0.969	1.175	1.383	1.589	1.796	2.002	2.209	2.416	2.622
	max	1.01	1.227	1.443	1.66	1.876	2.093	2.309	2.526	2.742
k(inch)	Nom	5/16	25/64	15/32	35/64	39/64	11/16	25/32	17/32	15/16
	min	0.302	0.378	0.455	0.531	0.591	0.658	0.749	0.81	0.902
	max	0.323	0.403	0.483	0.563	0.627	0.718	0.813	0.878	0.974
b(inch)	Ref.	1	1.25	1.38	1.5	1.75	2	2	2.25	2.25

FAQ

Q: Are you trading company or manufacturer ?

A: We are factory and OEM are available.

Q: How long is your delivery time?

A: Generally it is 2-5 days if the goods are in stock,or it is 15-30 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: 30% T/T in advance ,balance before shipment or L/C.

If you have another question, please feel free to contact us.

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