English
中文简体
русский
EspañolExplore Our Product Range
External Threaded Metric
Sleeve Anchor
Versatile mechanical expansion anchor with external threads and expanding sleeve design. Suitable for solid concrete, brick, and block masonry. The metric threaded sleeve anchor provides reliable holding power across a wide range of base materials.
Versatile Metric Threaded Anchoring for Multiple Base Materials
The External Threaded Metric Sleeve Anchor is one of the most versatile mechanical expansion anchors available. Unlike wedge anchors that are designed exclusively for solid concrete, the sleeve anchor performs reliably in solid concrete, brick, concrete block, and even some hollow masonry materials. This versatility makes the sleeve anchor the preferred choice for contractors who work with multiple base material types or who cannot guarantee that the anchor will always be installed in solid concrete.
The operating principle of a sleeve anchor differs from wedge anchors in several important ways. The sleeve anchor consists of a threaded bolt body, an expander cone at the bottom, and a cylindrical sleeve that surrounds the cone. When the nut is tightened, the bolt is drawn upward, pulling the expander cone into the sleeve. This action forces the sleeve to expand outward against the walls of the hole. The sleeve is typically split along its length, allowing it to expand uniformly. The expansion ratio of a sleeve anchor is generally greater than that of a wedge anchor, which is why sleeve anchors can be used in softer base materials like brick and block where wedge anchors would not expand sufficiently.
Metric external threading is a key feature of this anchor family. The threads are rolled to ISO 6H tolerance class, ensuring compatibility with standard metric nuts and washers worldwide. The external threads run the full length of the anchor or a portion thereof, depending on the configuration chosen. Fully threaded sleeve anchors allow the nut to be positioned anywhere along the anchor length, which is useful when fixture thickness varies. Partially threaded anchors have a longer unthreaded shank section, providing greater shear strength for applications where lateral loads are significant.
The material selection for metric sleeve anchors includes several options to match environmental conditions. Standard anchors are manufactured from carbon steel with electro-zinc plating, suitable for indoor and sheltered outdoor applications. For more corrosive environments, hot-dip galvanized carbon steel provides enhanced protection. For permanent outdoor, coastal, or chemical exposure, A2 and A4 stainless steel sleeve anchors are available. The stainless steel versions are manufactured from 304 or 316 grade material with matching stainless steel sleeves and expander cones.
Installation of external threaded metric sleeve anchors follows a straightforward procedure that can be performed by any competent construction crew. The required drill bit size is typically 2 to 3mm larger than the anchor diameter, unlike wedge anchors which require an exact match. This larger hole tolerance makes sleeve anchors more forgiving of drill bit wear and operator technique. The hole must still be cleaned thoroughly to remove dust, though sleeve anchors are slightly less sensitive to dust than wedge anchors due to their greater expansion range. After cleaning, the anchor is inserted through the fixture and into the hole, then tightened to the specified torque. The expanding sleeve provides immediate holding power with no curing time required.
For engineers and contractors selecting mechanical anchors for projects involving multiple base materials, the external threaded metric sleeve anchor offers an excellent combination of versatility, reliability, and cost-effectiveness. It performs well in concrete where wedge anchors excel, but also works in brick and block where wedge anchors cannot be used. The metric threading ensures compatibility with international standards. The sleeve expansion mechanism provides consistent performance across a range of hole sizes and base material strengths. When the application requires a single anchor type that can handle whatever base material is encountered, the sleeve anchor is the optimal choice.
Sleeve Expansion Mechanism
Split sleeve expands outward when cone is drawn upward. Provides greater expansion range than wedge anchors. Suitable for concrete, brick, and block masonry materials.
Metric External Threads ISO 6H
Rolled threads to ISO metric standard 6H tolerance. Compatible with standard metric nuts and washers worldwide. Fully threaded or partial thread options available.
Multiple Material Options
Available in zinc plated carbon steel, hot-dip galvanized, A2 stainless, and A4 stainless. Match anchor material to environmental exposure and service life requirements.
External Threaded Metric Sleeve Anchor Specifications
| Parameter | Carbon Steel Zinc Plated | A4 Stainless Steel |
|---|---|---|
| Diameter Range | M6 through M20 | M6 through M16 |
| Length Range | 50mm to 200mm | 50mm to 150mm |
| Material | Grade 5.8 Carbon Steel | A4 Stainless Steel 316 |
| Thread Type | Full thread or partial thread | Full thread or partial thread |
| Minimum Embedment | 4 times anchor diameter | 4.5 times anchor diameter |
| Hole Diameter | Anchor diameter + 2mm | Anchor diameter + 2mm |
Ordering and Availability
Sleeve Anchor Technical Support
Need load tables for brick or block? Our engineering team provides base material specific recommendations within 24 hours.
Request Sleeve Anchor DataExternal Threaded Metric Sleeve Anchor Applications
Masonry Construction
Brick walls, concrete block, stone masonry, and grouted cell construction where wedge anchors cannot be used due to hollow base material.
Solid Concrete
Concrete walls, floors, columns, and foundations where reliable mechanical anchoring is required. Suitable for both cracked and uncracked concrete.
Fixture Mounting
Electrical panel mounting, conduit supports, pipe hangers, mechanical equipment, and shelving systems in commercial and industrial buildings.
Retrofit and Renovation
Existing masonry and concrete structures where hole quality may vary. Forgiving sleeve design accommodates oversized holes.
Core Advantages of External Threaded Metric Sleeve Anchors
Multi-Material Versatility
Works in solid concrete, brick, hollow block, and stone. One anchor type for most base materials encountered on construction sites.
Forgiving Hole Tolerance
Requires hole 2mm larger than anchor diameter. Accommodates drill bit wear and operator technique variations better than wedge anchors.
Standard Metric Threads
ISO 6H rolled threads compatible with standard metric hardware worldwide. Simplifies replacement and adjustment.
Simple Installation
Drill, clean, insert, and tighten. No special tools beyond standard hammer drill and torque wrench. Immediate load capacity.
Yuyao Nanshan Development Co., Ltd.
Yuyao Nanshan Development Co., Ltd. was established in 1999 and is located in Ningbo with elegant and charming environments and enjoys convenient transportation.
Yuyao Nanshan Development Co., Ltd. is China External Threaded Metric Sleeve Anchor Manufacturers and Wholesale External Threaded Metric Sleeve Anchor Factory, specializes in producing Wedge Anchor with professional production equipment. Nanshan has strong technologies with advanced facilities and imported automatic production machines and inspection equipment. Nanshan also is using the ERP to control the production process line and has set up a research & development center for continued innovation and to meet the requirements of more and more customers from all over the world.
Our products extensively are used in steel high constructions, tunnel projects, bridges, railways, airport stations, high way, sea ports, nuclear power plants, and so on.
Yuyao Nanshan Development Co., Ltd. adheres to the principle of "quality the eternal base, credit forever pursuit", we will spare no effort to provide our customers with more stable quality and more wonderful service.
Sleeve Anchor Installation Procedure for Multiple Base Materials
Select Correct Drill Bit Size
For metric sleeve anchors, drill bit must be 2mm larger than anchor diameter. Example: M10 sleeve anchor requires 12mm drill bit. For masonry, use a masonry bit with carbide tip. For concrete, use hammer drill with carbide bit.
Drill Hole to Depth
Drill hole depth equal to anchor length plus 10mm for dust accumulation. For through-fixture installations, add fixture thickness to required embedment. Maintain perpendicularity within 2 degrees.
Clean Hole Thoroughly
Remove all drilling dust using compressed air or blow pump followed by wire brush. Two complete blow and brush cycles minimum. Dust reduces expansion effectiveness in all base materials.
Insert and Tighten Anchor
Place fixture over hole. Insert sleeve anchor through fixture into hole. Tighten nut to specified torque using calibrated torque wrench. The sleeve will expand against the hole wall, securing the anchor.
Sleeve Anchor Installation Tips
- Drill bit size: Anchor M6 use 8mm bit, M8 use 10mm bit, M10 use 12mm bit, M12 use 14mm bit, M16 use 18mm bit.
- Minimum embedment: 4 times anchor diameter for concrete, 5 times diameter for brick and block.
- Edge distance: Minimum 5 times anchor diameter from any free edge.
- Spacing: Minimum 8 times anchor diameter center to center for groups.
- For hollow block: Select sleeve anchors with longer sleeves for better grip in hollow cavities.
- Do not overtighten: Over-torquing can strip threads or damage sleeve expansion.
Tools Required for Sleeve Anchors
Sleeve Anchor vs. Wedge Anchor vs. Toggle Bolt
Sleeve Anchor Quality Control Program
Sleeve Expansion Test
Sample anchors tested in calibration block. Sleeve expansion verified to minimum diameter per specification. Ensures proper expansion range.
Tensile Testing
Destructive testing per ISO 898-1. Grade 5.8 minimum 500 MPa tensile strength verified each production batch.
Thread Gauge Inspection
100 percent GO/NO-GO thread gauge inspection. ISO 6H tolerance verified on all external threads.
Salt Spray Testing
Zinc plated samples tested to ASTM B117 48 to 72 hours without red rust.
Sleeve Anchor Design Parameters by Base Material
Solid Concrete Design
For solid concrete, use minimum embedment of 4 times anchor diameter. Higher load capacity than masonry. Concrete strength minimum C20/25. Edge distance 5 times diameter minimum.
Brick Masonry Design
For brick, use minimum embedment of 5 times anchor diameter. Brick compressive strength affects capacity. Locate anchors in brick center not near mortar joints. Reduced load values apply.
Hollow Block Design
For hollow concrete block, use sleeve anchors with longer sleeves to engage the webs. Minimum embedment through the face shell plus engagement in web. Consult technical data for hollow block capacities.
Cracked Concrete Consideration
Standard sleeve anchors are suitable for non-cracked concrete. For cracked concrete and seismic applications, specify seismic-rated sleeve anchors with enhanced sleeve design and AC193 approval.
Environmental Responsibility in Sleeve Anchor Manufacturing
Sleeve anchors manufactured with sustainable practices and full environmental compliance.
RoHS and REACH Compliance
Zinc plating Cr6+ free. All materials comply with EU environmental regulations.
100 Percent Recyclable
Steel sleeve anchors fully recyclable at end of structure life.
Efficient Manufacturing
Cold heading and sleeve rolling processes consume less energy than hot forming.
Sleeve Anchor Production Process
Cold Heading Body
Bolt body cold headed from wire. Includes integral expander cone at bottom. Precise cone geometry for consistent sleeve expansion.
Sleeve Rolling
Steel tube or strip rolled into sleeve shape. Longitudinal split allows uniform expansion. Sleeve length varies by anchor size and application.
Anchor Assembly
Sleeve assembled over cone. Washer and nut added. 100 percent visual inspection verifies sleeve positioning and thread quality.
Sleeve Anchor Production Process Flow
External Threaded Metric Sleeve Anchor Load Capacity
Values shown for carbon steel sleeve anchors in solid concrete C25/30. Minimum embedment equals 4 times anchor diameter. Safety factor of 4 to 1 applies for working loads. For brick and block, reduce values by 40 to 60 percent depending on base material strength.
| Diameter mm | Min Embedment mm | Ultimate Tensile kN | Ultimate Shear kN | Recommended Torque Nm | Drill Bit Size mm |
|---|---|---|---|---|---|
| M6 | 24 | 4.5 | 6.5 | 10 | 8 |
| M8 | 32 | 8.0 | 11.0 | 20 | 10 |
| M10 | 40 | 12.5 | 17.0 | 35 | 12 |
| M12 | 48 | 18.0 | 24.0 | 55 | 14 |
| M16 | 64 | 32.0 | 40.0 | 100 | 18 |
| M20 | 80 | 50.0 | 62.0 | 180 | 22 |
For brick and hollow block, reduce concrete values significantly. Field testing is recommended for critical applications in masonry. For cracked concrete, reduce values by 30 percent for standard sleeve anchors or specify seismic-rated sleeve anchors.
Professional Sleeve Anchor Installation by Base Material
Pre-Installation Verification
- Identify base material: solid concrete, brick, or hollow block. Each requires different embedment and load values.
- Confirm drill bit size: anchor diameter plus 2mm. Verify bit is sharp and correct type for base material.
- Verify minimum edge distance: 5 times anchor diameter for concrete, 6 times for brick.
- Verify minimum spacing: 8 times anchor diameter center to center.
- Check that anchor length provides required embedment plus fixture thickness plus nut and washer clearance.
- For hollow block, confirm anchor sleeve length is sufficient to engage block webs.
Installation by Base Material Type
- For concrete: Use hammer drill in hammer mode. Drill depth equals anchor length plus 10mm.
- For brick: Use rotary drill or hammer drill with light hammer setting. Excessive hammering may damage brick.
- For hollow block: Drill through face shell only. Do not drill completely through block if possible.
- Clean hole thoroughly: Two blow and brush cycles minimum for all base materials.
- Insert anchor through fixture. For hollow block, ensure sleeve clears face shell before expansion.
- Tighten nut to specified torque. For brick and block, stop immediately if concrete crushes.
Special Considerations for Masonry Installation
- Brick: Locate anchors in the center of brick, not near mortar joints. Mortar has lower strength.
- Block: Use anchor length that allows sleeve to expand within the block web, not the hollow cavity.
- Reduce torque for masonry: Over-torquing can crush brick or block, reducing anchor capacity.
- Test installation: Always install test anchors in representative masonry before full production.
- Consider chemical anchors: For critical loads in low-strength masonry, chemical anchors may be preferred.
Masonry Warning: Sleeve anchor capacities in brick and block are significantly lower than in concrete. Field testing is strongly recommended for critical applications. Do not assume concrete load values apply to masonry.
Standards and Approvals for Metric Sleeve Anchors
European Standards
EN 1992-4 for anchors in concrete. EN ISO 898-1 for fastener properties. EN 10204 Type 3.1 certification available.
ISO Standards
ISO 9001:2015 manufacturing. ISO 6H thread tolerance. ISO 4042 for plating specifications.
ASTM Methods
ASTM F606 mechanical testing. ASTM B117 salt spray. ASTM E8 tensile testing.
Masonry Standards
Testing per ASTM E488 for anchors in masonry. Values available for brick and block installations.
Recommended Torque for Metric Sleeve Anchors by Base Material
| Diameter mm | Concrete Torque Nm | Brick Torque Nm | Block Torque Nm | Torque Multiplier Required |
|---|---|---|---|---|
| M6 | 10 | 6 | 5 | No |
| M8 | 20 | 12 | 10 | No |
| M12 | 55 | 35 | 28 | No |
| M20 | 180 | 120 | 90 | Yes for large diameters |
For stainless steel sleeve anchors, reduce torque values by 20 percent and apply nickel-based anti-seize lubricant to prevent galling. For hollow block, use lower end of torque range to avoid crushing face shell.
Safety Factors for Sleeve Anchors by Base Material
| Base Material | Application Category | Safety Factor | Notes |
|---|---|---|---|
| Solid Concrete | General structural | 4.0 | Use 5.0 for critical applications |
| Solid Concrete | Non-structural | 3.0 | Signage light fixtures |
| Brick Masonry | Critical loads | 6.0 to 8.0 | Test installation required |
| Hollow Block | General anchoring | 5.0 to 6.0 | Capacity depends on web engagement |
| Cracked Concrete | Seismic categories | 4.0 with seismic reduction | Use seismic-rated sleeve anchors |
Payment and Shipping for Sleeve Anchors
Payment Methods
Shipping Ports
Packaging
External Threaded Metric Sleeve Anchor Frequently Asked Questions
Corrosion Protection for Sleeve Anchors by Environment
| Environment Description | Recommended Material | Service Life Years | Notes |
|---|---|---|---|
| Dry indoor heated no condensation | Zinc plated carbon steel | 50 plus | Standard coating sufficient |
| Indoor with occasional condensation | Zinc plated with yellow passivation | 30 to 40 | Yellow passivation provides higher corrosion resistance |
| Sheltered outdoor under roof | Hot-dip galvanized carbon steel | 15 to 20 | HDG recommended for outdoor use |
| Outdoor urban deicing salts | A4 stainless steel | 30 plus | A4 required for salt exposure |
| Coastal within 1 kilometer | A4 stainless steel | 30 plus | A2 stainless not sufficient for coastal |
| Chemical plant or wastewater | A4 stainless steel | 25 plus | Verify chemical compatibility for specific exposure |
Chemical Resistance of Sleeve Anchors by Material Type
| Chemical | Concentration | Zinc Plated Carbon Steel | A4 Stainless Steel | Recommendation |
|---|---|---|---|---|
| Fresh water | Any | Good | Excellent | Zinc suitable for indoor. A4 for immersion. |
| Seawater or brine | 3.5 percent | Poor | Excellent | A4 required for marine environments. |
| Sulfuric acid dilute | Up to 10 percent | Very Poor | Fair | Not suitable. |
| Sodium hydroxide | Up to 10 percent | Fair | Excellent | Limited exposure only for carbon steel. |
| Ammonium hydroxide | Any | Poor | Good | Zinc corrodes rapidly. Use stainless. |
Sleeve Anchor Case Studies
Sleeve anchors for mounting electrical panels on brick walls in a 100 year old school building.
M10 zinc plated sleeve anchors were used to mount electrical distribution panels on solid brick walls. The brick was variable in strength. Sleeve anchors provided reliable expansion without damaging the brick. Over 2000 anchors installed. No pull-out failures reported after 6 years of service.
Key learning: Sleeve anchors are ideal for retrofitting fixtures to existing masonry where wedge anchors cannot be used.
A4 stainless sleeve anchors for corrosive environment in parking garage with deicing salts.
M12 A4 stainless sleeve anchors were specified for mounting conduit and lighting in a parking garage subject to salt-laden runoff from deicing. After 5 years of service, anchors show no corrosion while carbon steel anchors in adjacent areas required replacement.
Key learning: For deicing salt environments, A4 stainless steel sleeve anchors are required for acceptable service life.
Glossary of Sleeve Anchor Terminology
Sleeve Anchor
Mechanical expansion anchor with a cylindrical sleeve that expands when the cone is drawn upward. Suitable for concrete, brick, and block.
External Thread
Threads on the exterior of the anchor body. Accepts standard nuts and washers for fixture attachment.
Expander Cone
Integral cone at bottom of anchor that forces sleeve outward when anchor is tightened.
Split Sleeve
Sleeve with longitudinal split that allows radial expansion. May be single split or multiple splits.
ISO 6H Thread
International standard thread tolerance class for external metric threads. Provides consistent fit with standard nuts.
Face Shell
The outer solid layer of a hollow concrete block. Sleeve anchors must expand within the face shell or into the web.
Web
The solid vertical sections inside a hollow concrete block. Preferred location for sleeve anchor expansion.
Masonry Bit
Drill bit with carbide tip designed for brick and block. Used in rotary mode, not hammer mode.
Sleeve Anchor Documentation Package
For projects requiring documented quality assurance, we provide comprehensive sleeve anchor documentation including expansion test videos upon request. Third-party inspection is available. All records are maintained for minimum 10 years.
Related Tags & Articles
Hex Nut Type Sleeve Anchor Bolt
Product Introduction Standard Hex Nut Sleeve Anchor for Universal Fastening
Stainless Steel Metric Wedge Anchor
Product Introduction Corrosion Resistance Witho
Heavy Duty Zinc Plated Wedge Anchor
Product Introduction Ensuring Structural Integrity in Concrete & Masonr
Carbon Steel Through Bolt Wedge Anchor
Product Introduction One-Step Installation Without Compromising Holding Str
Concrete Installation Wedge Anchor Bolt
Product Introduction Fast, Reliable Concrete Installation for Demanding Sch
Seismic Resistant Wedge Anchor Fastener
Product Introduction Engineered Anchoring for Seismic Demand and Cracked Co
High Strength Structural Wedge Anchor
Product Introduction Ultra-High Strength Mechanical Anchoring for Critical
Four Shield Heavy Duty Bolt Anchor
Product Introduction Four Shield Expansion Technology for Maximum Load Capa
Three Shield Heavy Duty Screw Anchor
Product Introduction Three Shield Expansion Technology for Reliable Heavy D
Need Versatile Sleeve Anchors for Mixed Materials?
Whether your project involves concrete, brick, or block, our external threaded metric sleeve anchors provide reliable performance across all base materials.
