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Brand: Hilti
Hilti HSL4 Heavy-Duty Expansion Anchor M8-M24
Description
The Hilti HSL4 is a heavy-duty, torque-controlled expansion anchor for cracked and non-cracked concrete, sized M8 to M24. Hilti describes it as a high-performance anchor with approvals for safety-relevant and dynamic applications, including seismic C1 and C2, fatigue, shock and fire, and lists use in nuclear power plants.
Heavy equipment, columns and dynamic loads
Hilti lists machines, heavy equipment, steel columns, heavy pipe supports, pumps, beam supports, cantilevers and cranes among the applications where extensive approval and technical back-up is needed. The product page notes force-controlled expansion that allows follow-up expansion, ETA Option 1 for cracked and uncracked concrete, and ICC-ES assessment under AC 193. The datasheet states the same performance with hammer drilling, diamond drilling and hollow drill bit, and a top shear performance due to high-strength expansion and shear sleeves.
Technical specifications
| Parameter | Specification |
|---|---|
| Anchor type | Heavy-duty expansion anchor, concrete (steel to concrete) |
| Product page material | Carbon steel, zinc-plated, hex head (HSL4) |
| Base material | Cracked and non-cracked concrete C20/25 to C50/60 |
| Versions | HSL4 bolt M8 to M24; HSL4-G threaded rod M8 to M24; HSL4-B safety cap M12 to M24; HSL4-SK countersunk M8 to M12 |
| Approvals listed | ETA-19/0556 (CSTB: static, seismic, fire); ETA-19/0858 (fatigue); BZS D 19-601 (shock, valid to 2030-10-31); ICC-ES ESR-4386 |
| Seismic | Categories C1 and C2 |
| Drill bit diameter | 12, 15, 18, 24, 28, 32 mm for M8 to M24 |
| Installation torque, HSL4 | 15, 25, 60, 75, 145, 210 Nm for M8 to M24 |
| Installation torque, HSL4-G | 20, 27, 60, 70, 105, 180 Nm for M8 to M24 |
| Installation torque, HSL4-B | Controlled by the safety cap |
| Effective anchorage depth, M12 | 80, 105, 130 mm by setting position |
| Effective anchorage depth, M24 | 150, 180, 210 mm by setting position |
| Minimum concrete thickness, M12 | 160, 225, 250 mm by setting position |
| Fixture thickness | 5 to 200 mm (M8 to M12); 10 to 200 mm (M16 to M24); HSL4-B maximum 50 mm |
| Installation set-up | Impact wrench with adaptive torque module available for HSL4 and HSL4-G |
HSL4 versions and lengths
| Version | Type | Sizes | Datasheet notes |
|---|---|---|---|
| HSL4 | Bolt version | M8 to M24 | Anchor lengths from 82 mm (M8) to 235 mm (M24) |
| HSL4-G | Threaded rod version | M8 to M24 | Lengths from 92 mm up to 330 mm (M16); Hilti filling set 8 to 15 mm thick |
| HSL4-B | Safety cap version | M12 to M24 | Cap ensures proper installation torque without a calibrated torque wrench |
| HSL4-SK | Countersunk version | M8 to M12 | Lengths 80 to 120 mm; hexagon socket screw key 5 to 8 mm |
Selection and ordering checks
Confirm the size, anchor length, setting position (embedment) and the concrete thickness from the datasheet table, the fixture thickness, the loading type and the approvals the project calls for. Related Hilti mechanical anchors in the same catalogue are the HST3 wedge anchor and the HDA undercut anchor. Check the exact item number and pack size on the Hilti product page, which lists packs of 4 to 20 pieces by size.
Documents and quotation
For a quotation on the HSL4, send Seven Star LLC the exact model, quantity and delivery point in Oman or elsewhere in the GCC. Seven Star LLC is an independent supplier based in Muscat and does not hold any manufacturer status for Hilti. The Hilti HSL4 technical datasheet (steel-to-concrete, update Dec-25) is attached as a manufacturer PDF; the product page also lists the ETA, ICC-ES report and operating instructions. Current item numbers, pack sizes and availability should be read from the Hilti product page. Related Hilti items sit in the Material Handling & Lifting Equipment category.
Datasheets & Documents
- Datasheet Hilti HSL4 expansion anchor technical datasheet, steel-to-concrete (manufacturer PDF, Dec-25) Download
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About brand
Hilti is the Liechtenstein construction technology company for fastening, anchoring, firestop, installation and power tool systems. The brothers Martin and Eugen Hilti opened a small mechanical workshop in Schaan, Liechtenstein, in 1941, and the company turned to fastening technology after Martin Hilti acquired a fastening patent in 1948. Hilti is still headquartered in Schaan and controlled by the Martin Hilti Family Trust, created in 1980.
Seven Star LLC is an independent supplier in Muscat. We list Hilti power tools and firestop products, each with the manufacturer operating instructions, for contractors and maintenance teams in Oman and the GCC.
Hilti company profile
| Founded | 1941, Schaan, Liechtenstein |
|---|---|
| Founders | Martin Hilti and Eugen Hilti |
| Headquarters | Schaan, Liechtenstein |
| Ownership | Controlled by the Martin Hilti Family Trust (created 1980) |
| Product families | DX powder-actuated and BX battery fastening tools, stud fusion systems, mechanical and chemical anchors, CP and CFS firestop sealants and systems, MQ and MI installation channels, cordless power tools and measuring tools |
Milestones
- 1941: Martin and Eugen Hilti open a mechanical workshop in Schaan.
- 1948: Martin Hilti acquires a patent for fastening technology.
- 1952: The first international sales cooperation is agreed, in Italy.
- 1957: The DX 100 powder-actuated tool is introduced, which Hilti describes as the world's first.
- 1980: The Hilti family creates the Martin Hilti Family Trust.
Hilti product series
The power tools listed here include SDS Plus and SDS Max rotary and combihammers (TE 8-22, TE 70-22, TE 70-ATC/AVR), demolition hammers and breakers (TE 1000-AVR, TE 2000-22, TE 3000-AVR), angle grinders from 125 to 230 mm (AG 125-13S, AG 230-24D, AG 4D-22, AG 30D-22), cordless impact wrenches (SIW 6AT-22, SIW 10-22, SIW 20-22), the SF 30M-22 magnetic drill press, the SF 6H-22 hammer drill driver and the SC 6ML-22 metal-cutting circular saw. Many of the cordless models run on the 22 V Nuron battery platform.
Firestop products such as the CP 601S silicone sealant and CP 606 acrylic sealant seal penetrations and joints in fire-rated walls and floors.
Where Hilti tools are used
Drilling and anchoring in concrete, demolition and chiselling, steel fabrication and erection, bolting on structures and pipe supports, mechanical and electrical installation work and passive fire protection in buildings and industrial plants.
Hilti products we list
Ordering Hilti products: what we need
Give the tool designation and, if available, the item number. For cordless tools state whether you need the bare tool or a kit with batteries and charger; for corded tools give the supply voltage and plug type. For firestop products give the product, colour, cartridge size and quantity, and the fire rating or approval the project requires.
Facts checked against Hilti's published company history, October 2026.
Browse Hilti products by category: Material Handling & Lifting Equipment.
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Frequently Asked Questions
What is the HSL4 used for?
Heavy-duty and dynamic fastenings in concrete such as machines, steel columns, pumps, heavy pipe supports and cranes, per the Hilti product page.
Which approvals does the datasheet list?
ETA-19/0556 for static, seismic and fire, ETA-19/0858 for fatigue and BZS D 19-601 for shock.
What does the HSL4-B version add?
A safety cap that ensures proper installation torque even without a calibrated torque wrench.
Which sizes are offered?
M8 to M24 for the bolt and threaded rod versions, M12 to M24 for HSL4-B and M8 to M12 for HSL4-SK.
Can it be used in cracked concrete?
Yes, the datasheet lists cracked concrete C20/25 to C50/60 with seismic C1 and C2.
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