Name: Mechanical Anchor Bolt
Rating: 5 (99 reviews)

Mechanical Anchor Bolt

The conical body of the screw head matches the collar, and the gasket and nut are placed to form a complete anchor.plug body;The anchor collar is equipped with a protruding wedge block that cooperates with the hole wall to produce frictional resistance when installed;The structure is simple in design and reasonable in structure, suitable for quick and transparent installation. Suitable for all kinds of tubesRoads, cable trays, light steel keels, and other roof hanging systems;Material: The screw is made of high-quality carbon steel and stainless steel by cold heading, and the collar is made of carbon steel by cold pressing.Installation instructions1. Determine the effective anchoring depth and use a drill to drill holes in the concrete substrate;2. After drilling the hole, use an air pump or manual air cylinder to clean the dust and sand in the hole;3. According to the specifications of the self-expanding anchor bolt, use an impact drill to drill the hole, and the hole depth is the effective depth;4. Insert the anchor bolt into the connector hole, then remove the gasket and hexagonal nut, use a special impact electric hammer connection socket tool to match the keyway of the anchor bolt sleeve, and then start to expand the hole;5. The anchor head gradually expands under the impact pressure. When the anchor body reaches the set displacement value along the axial direction, it indicates that the cavity hole has been expanded. Remove the set of tools, install the gaskets and nuts, and use a torque wrench to tighten according to the design value. When the design value is reached, the installation is completed.Installation diagram①Drilling;②Clean the dust;③Insert the rear reaming drill bit into the hole;④Adjust the positioning sleeve to set the displacement S and determine the expansion diameter D;⑤ Connect the impact drilling power source to start reaming the hole. When the transmission rod moves axially downward to the set displacement scale, the reaming is completed;⑥Insert the anchor bolt;⑦Put the sleeve through the head of the anchor bolt, and hit the sleeve with a hammer so that the expansion piece of the anchor head opens and fully contacts the expanded cavity to form a locking mechanism;⑧Put on the gasket nut, apply torque with a wrench to reach the design torque, and the installation is completed.

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Mechanical anchoring hardware

Mechanical Anchor Bolt

Expansion-type mechanical anchor for concrete and solid masonry | Torque-controlled setting

Carbon steel / stainless steel M6 to M24 Concrete and solid masonry

Product overview

The Mechanical Anchor Bolt is an expansion-type anchor that develops holding capacity through a torque-controlled wedging action inside a pre-drilled hole. The anchor consists of a threaded stud or bolt, an expansion sleeve or clip, and a cone at the embedded end. When the nut or bolt head is tightened to the specified torque, the cone is drawn into the expansion element, pressing it against the hole wall and creating a mechanical interlock. This design is suited to solid concrete and solid masonry substrates and provides immediate load capacity without adhesive curing time. Available in carbon steel with zinc or hot-dip galvanized finish, and in stainless steel grades for exposed or humid conditions. Bolt diameters range from M6 to M24, with anchor length selected according to embedment depth and fixture thickness. Mechanical anchors are commonly used for facade brackets, structural connections, equipment fixing, and temporary works. Production is supported by in-house mold and tooling teams, enabling development according to customer drawings or samples, with verification using the company's laboratory and advanced testing equipment.

Type Mechanical expansion anchor

Setting Torque controlled

Substrate Concrete, solid masonry

Diameter range M6 to M24

Customization Drawings or samples accepted

Core advantages

Immediate load capacity Mechanical interlock develops holding force immediately after torque application, with no adhesive curing period before loading.

Torque-verifiable installation Setting torque can be checked after installation, providing a direct indicator of correct anchor engagement for inspection records.

Removable fixing The stud or bolt can be unloaded and removed where temporary fixing or later adjustment is required, unlike cast-in systems.

Material options for exposure Zinc-plated and hot-dip galvanized carbon steel options cover standard conditions, while stainless grades suit humid, coastal, or architectural applications.

Custom development support Products can be developed and produced according to customer drawings or samples, with mold and tooling teams covering various shapes, sizes, and material specifications.

Self-manufactured supply All products are produced in-house, allowing direct pricing and production scheduling, with annual capacity exceeding 2,000 tons and products meeting international standards.

Product characteristics

Anchor type Mechanical expansion anchor Wedge or clip mechanism

Thread sizes M6, M8, M10, M12, M16, M20, M24 Custom sizes on request

Material Carbon steel, AISI 304, AISI 316L Per exposure class

Surface finish Zinc plated, hot-dip galvanized, passivated Coating thickness varies

Substrate Solid concrete and solid masonry Not for hollow block

Setting method Torque wrench or impact driver Per anchor specification

Quality verification In-house laboratory and testing equipment Dimensional and mechanical checks

Standards Products meet international standards Documentation on request

Application scenarios

01 Facade bracket and subframe anchoring to concrete

02 Structural steel connection base plates

03 Mechanical equipment and machinery fixing

04 Pipe supports, cable trays, and duct hangers

05 Temporary works and site fixtures requiring removal

06 Guardrail and handrail post anchorage

Installation and project notes

Hole diameter and depth Drill to the diameter and depth specified for the anchor size. Hole depth should exceed embedment depth to allow the anchor to be set below the surface where required.

Hole cleaning Remove drilling dust with a brush and blow-out before setting. Residual dust reduces friction and can lower the achieved load capacity.

Torque application Tighten to the specified torque using a calibrated wrench. Under-tightening limits expansion; over-tightening may damage the thread or substrate.

Edge and spacing limits Respect minimum edge distance and anchor spacing for the substrate. Reduced edge distance lowers capacity and should be reviewed in the structural calculation.

Custom sizes and grades Non-standard lengths, diameters, or material grades can be developed from drawings or samples. Tooling teams review the geometry, and verification is carried out in the in-house laboratory.

Supply and documentation All products are self-manufactured, allowing direct pricing and stable scheduling. Annual capacity exceeds 2,000 tons, and products are manufactured to international standards with documentation available on request.

Frequently asked questions

How does a mechanical anchor differ from a chemical anchor?

A mechanical anchor develops capacity through physical expansion against the hole wall, with load available immediately after torquing. A chemical anchor relies on adhesive bonding, which requires curing time and is sensitive to hole cleanliness and temperature. Mechanical anchors are suited to solid substrates, while chemical anchors are often preferred for hollow or cracked concrete and for close edge distances.

What substrate conditions suit mechanical anchor bolts?

Mechanical anchors are intended for solid concrete and solid masonry. They are not recommended for hollow block, lightweight aerated concrete, or friable substrates, where expansion cannot develop reliable interlock. For these conditions, chemical anchors or through-bolt solutions should be considered.

When should stainless steel be specified instead of zinc-plated carbon steel?

Stainless steel is specified for coastal and marine environments, areas with de-icing salts, humid interior spaces, and architectural applications where staining or corrosion products are unacceptable. Zinc-plated and hot-dip galvanized carbon steel options are generally suitable for inland and sheltered conditions.

Can non-standard anchor sizes or materials be produced?

Yes. Products can be developed and produced according to customer drawings or samples. Diameter, length, thread specification, expansion geometry, and material grade can be adjusted, with in-house mold and tooling teams supporting the required configuration. All products are self-manufactured, and verification uses the company's laboratory and advanced testing equipment.

How is anchor quality verified before delivery?

Thread accuracy, dimensions, expansion element geometry, and coating or material condition are checked in the in-house laboratory. Products are manufactured to comply with international standards, and annual production capacity exceeds 2,000 tons to support project schedules and repeat orders.

Custom development from drawings or samples | In-house laboratory | Self-manufactured supply | International standards | 2000+ tons annual capacity

Article No.	Size	Borehole	Anchorage depth	Effective fixture(mm)	Optimum bearing capacity kgs
1001	M8 X 40/65	12	40	15	1150
1002	M8 X 50/80	12	50	15
1003	M8 X 60/100	12	60	20
1004	M10 X 50/80	14	50	15	1650
1005	M10 X 60/100	14	60	20
1006	M10 X 80/120	14	80	25
1007	M12 X 80/130	18	80	25	2500
1008	M12 X 100/150	18	100	30
1009	M12 X 110/170	18	110	40
1010	M14 X 100/150	20	100	30	3200
1011	MI4 X 120/180	20	120	40	3200
1012	M16 X 100/155	22	100	30	4300
1013	M16 X 120/185	22	120	40
1014	M16 X 140/215	22	140	50
1015	M18 X 120/180	24	120	40	5500
1016	M18 X 140/200	24	140	50	5500
1017	M20 X 150/210	28	150	30	6500
1018	M20 X 170/240	28	170	40
1019	M20 X 180/260	28	180	50
1020	M24 X 200/300	32	200	50	8500
1021	M24 X 200/320	32	200	70
1022	M24 X 200/350	32	200	100
1023	M30 X 200/300	42	200	50	1150
1024	M30 X 200/350	42	200	100
1025	M30 X 200/400	42	200	150

Model	Bolt diameter	Anchor bolt diameter	Installation	Anchor bolt length	Anchor bolt length	Drilling depth	Shear force	Cutting force
M8 X 50	8	8	10	50	8	35	7.19	7.32
M8 X 60	8	8	15	60	8	45
M8 X 70	8	8	15	70	8	55
M8 X 80	10	10	20	80	10	60	11.83	8.29
M8 X 100	10	10	30	100	10	80
M12 X 100	12	12	25	100	12	80	18.63	15.3
M12 X110	12	12	30	110	12	90
M16 X150	16	16	30	150	16	125	32.8	23.5
M16 X 200	16	16	35	200	16	160
M20 X 200	20	20	35	200	20	160	45.6	34.6