High Strength Heavy Hex Bolts

For reliable and heavy‑duty fastening solutions, trust China supplier Xiaoguo® High strength Heavy Hex Bolts. They resist deformation, fatigue, and vibration under extreme working conditions, ensuring safe and stable connections. With standardized production and strict quality inspection, advanced High strength Heavy Hex Bolts become your ideal choice for industrial assembly and infrastructure projects.

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Product Description

1、Product Technical Specifications:

These quality High strength heavy hex bolts are made for heavy structural work. They follow strict industry standards so they can support heavy loads reliably.

These bolts have a wider and thicker hex head than standard hex bolts. This gives a larger contact area, spreads torque better, and reduces slipping during installation. They work with standard heavy hex sockets and wrenches.

They are made according to common industry standards such as ASTM A325, ASTM A490, and ASME B18.2.6. They are available in metric and imperial sizes, with different shaft diameters and lengths for various structural projects.

They are made of hardened alloy steel and have set tensile strength and yield strength values. They are designed to carry heavy static and dynamic loads without bending or breaking.

Most of these bolts have a protective coating. Hot-dip galvanizing is used for outdoor use to prevent corrosion, and plain black oxide is used indoors. This helps them last longer in harsh working conditions.

High Strength Heavy Hex Bolts

Mon	M14	M16	M18	M20	M22	M24	M27	M30	M33	M36	M39
P	2	2	2.5	2.5	2.5	3	3	3.5	3.5	4	4
da max	15.7	17.7	20.2	22.4	24.4	26.4	30.4	33.4	36.4	39.4	42.4
e min	23.36	26.75	30.14	33.53	37.72	39.98	45.2	50.85	55.37	60.79	66.44
k max	8.98	10.18	11.715	12.715	14.215	15.215	17.35	19.12	21.42	22.92	25.42
k min	8.62	9.82	11.285	12.285	13.785	14.785	16.65	18.28	20.58	22.08	24.58
r min	0.6	0.6	0.6	0.8	0.8	0.8	1	1	1	1	1
s max	21	24	27	30	34	36	41	46	50	55	60
s min	20.67	23.67	26.67	29.67	33.38	35.38	40	45	49	53.8	58.8

2、Product application field cases

High strength heavy hex bolts are used for assembly work with heavy loads and high stress that needs stable, long-lasting fastening. They are used in many construction and industrial projects where ordinary bolts are not strong enough.

In bridge construction, these bolts hold steel girders, support beams and joints together. They carry heavy structural weight and stand up to constant wind, traffic vibration and outdoor conditions without loosening or breaking.

They are also widely used in steel high-rise buildings to secure steel frames, column-beam connections and floor support structures. This helps keep the building stable and meet safety requirements.

In heavy machinery manufacturing, these bolts are used to install engine mounts, gearbox housings, chassis parts and large equipment frames. They can handle heavy mechanical stress and continuous use.

They are also common in other infrastructure projects, such as highway guardrails, railway tracks and tower crane assembly, where stable clamping force and load capacity are necessary.

High Strength Heavy Hex Bolts

3. Q&A

What is the minimum order quantity for standard-sized High strength Heavy Hex Bolts?

The MOQ for regular standard sizes is 500 pieces per specification. For small trial orders with less than 500 pieces, we can check existing stock and arrange a small batch shipment if inventory allows. Bulk orders over 5000 pieces will get a discounted unit price. We will clearly inform you of MOQ and pricing details before order confirmation, with no hidden charges for small batch trials.