Hilti X-CC DKH Data Sheet: Suspended Ceiling Fastener
July 2023
Product Info
Product Description
Designation: X-CC DKH
Features
- Enhanced load capacity due to deep embedment.
- Suitable for use on hard or tough concrete, e.g. renovation jobs on older concrete.
- With the DX Hybrid technique – fastenings are driven into a small pre-drilled hole, increasing the stick rate to almost 100% while protecting the base material from spalling.
- Peace of mind – European Technical Assessment (ETA) approved system for suspended ceilings.
- Suitable for hook ceiling hangers.
Application Conditions
Applications
Suspended ceiling
Diagram showing a suspended ceiling grid.
Hanger Type
Hook
Base Materials
Concrete
Load Conditions
Static/quasi static
Environmental Conditions
Dry indoor
Approvals
Approvals and Certificates
| Authority | Approval/Certificate | Date of Issue |
|---|---|---|
| DIBt | ETA-22/0587 | 07/2023 |
ℹ Not all information presented in this product data sheet might be subject to approval/certificate content. Please refer to approval/certificate for further information.
Product Info - Dimensions
Dimensions
Diagram showing the dimensions of the X-CC DKH 48 P8S15 fastener. Key dimensions include: 20mm, 7.5mm, 24mm, 79.5mm, 25.5mm, 10mm, Ø15mm, Ø8mm, 1.5mm, Ø4mm, Ø8mm, 2mm, 2mm, 48mm, 50mm.
Material Specification and Material Properties
| Designation | Element | Material | Standard |
|---|---|---|---|
| X-CC | Ceiling clip | HC300LA+ZE75/75 | EN 10268 |
| Designation | Element | Material | Coating | Minimum coating thickness tc [µm] | Hardness [HRC] |
|---|---|---|---|---|---|
| X-DKH 48 P8S15 | Nail | Carbon steel | Zinc | 5 | 58 |
| Element | Material | Standard | Coating | Minimum coating thickness tc [µm] | Diameter [mm] |
|---|---|---|---|---|---|
| Steel washer | DC 01 C390 EN 10139 | Zinc | 10 | 15 | |
| Plastic washer | Propylene | 8 |
Application Requirements
Base Material Properties and Fastener Positioning in Base Material
Diagram illustrating fastener positioning in concrete, indicating minimum edge distance (C1,min, C2,min) and spacing (S1,min, S2,min) relative to the fastener's depth (hmin).
| Base material | Concrete class | Base material thickness hmin [mm] | Edge distance C1,min, C2,min [mm] | Spacing S1,min, S2,min [mm] |
|---|---|---|---|---|
| Concrete | C20/25 – C50/60 | 100 | 150 | 100 |
Performance Data
Single Point Loads
| Designation | Hanger type | Characteristic resistance under tension load NRk [kN] | Recommended tension load Nrec [kN] |
|---|---|---|---|
| X-CC DKH 48 P8S15 | Hook | 1.80 | 0.86 |
System Loads
Maximum allowable ceiling weight [kN/m²]
Diagram illustrating a suspended ceiling grid with carrying channels (a) and hanger spacing (b).
| Carrying channel/ spacing a [mm] | Hanger spacing b [mm] | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 |
|---|---|---|---|---|---|---|---|---|---|
| 500 | 1.60 | 1.33 | 1.14 | 1.00 | 0.88 | 0.80 | 0.72 | 0.66 | |
| 600 | 1.33 | 1.11 | 0.95 | 0.83 | 0.74 | 0.66 | 0.60 | 0.55 | |
| 700 | 1.14 | 0.95 | 0.81 | 0.71 | 0.63 | 0.57 | 0.51 | 0.47 | |
| 800 | 1.00 | 0.83 | 0.71 | 0.62 | 0.55 | 0.50 | 0.45 | 0.41 | |
| 900 | 0.88 | 0.74 | 0.63 | 0.55 | 0.49 | 0.44 | 0.40 | 0.37 | |
| 1000 | 0.80 | 0.66 | 0.57 | 0.50 | 0.44 | 0.40 | 0.36 | 0.33 | |
| 1100 | 0.72 | 0.60 | 0.51 | 0.45 | 0.40 | 0.36 | 0.33 | 0.30 | |
| 1200 | 0.66 | 0.55 | 0.47 | 0.41 | 0.37 | 0.33 | 0.30 | 0.27 |
ℹ Allowable ceilings weights are calculated based on a maximum recommended hanger load of 0.4 kN.
ℹ The eccentric load introduction into the fastener is already considered in these load values.
ℹ Fastening of redundant non-structural components (details see ETA-22/0587).
Stick Rate Estimation
Stick Rate Estimation
Diagram showing nails being driven into concrete, with one highlighted as incorrect.
| Designation | Soft/standard concrete | Tough concrete |
|---|---|---|
| X-CC DKH 48 P8S15 | 100% | 100% |
ℹ The stick rate indicates the percentage of nails that were driven correctly to carry a load.
ℹ Stick rate can vary from the above values depending on job site conditions.
System Recommendation
System Recommendation for Fastening Collated Nails with Powder-Actuated Tools
| Designation | Powder-actuated tool | ||
|---|---|---|---|
| DX 6 F8 | DX 5 F8 | DX 460 F8 | |
| X-CC DKH 48 P8S15 | ☑ recommended | ☑ recommended | ☑ recommended |
Cartridge Recommendation
| Base material | Cartridge color (tool power level) | Tool type | Cartridge type |
|---|---|---|---|
| Soft/standard concrete | titanium (4-7) | DX 6 F8 | 6.8/11 M10 for DX 6 |
| Tough concrete | titanium (6-8), black (7-8) | ||
| Soft/standard concrete | yellow, red | DX 5 F8, DX 460 F8 | 6.8/11 M10 |
| Tough concrete | red, black |
ℹ Tool power level adjustment by setting tests on site (see chapter quality assurance).
ℹ For more details, please refer to the chapter Accessories and consumables compatibility in the Direct Fastening Technology Manual (DFTM).
Installation Recommendation
Pre-drilling
Diagram showing a cross-section of a pre-drilled hole in concrete with specified diameter Ø5mm and depth 23mm.
| Base material | Concrete |
|---|---|
| Concrete class | C20/25 – C50/60 |
| Nominal diameter of drill bit [mm] | 5 |
| Cutting diameter of drill bit dcut [mm] | 5.4 |
| Depth of pre-drilling [mm] | 23 |
| Drill bit | TX-C 5/23, TX-C 5/23B |
Quality Assurance
Fastening Inspection
| Hanger type | Designation | Fastener stand-off hNHS [mm] |
|---|---|---|
| Hook | X-CC DKH 48 P8S15 | 6-10 |
ℹ Visible setting failures must be replaced with a new fastener, not in the same hole.
ℹ These are abbreviated instructions which may vary by application. Always review/ follow the instructions accompanying the product.
Fastener Program
| Item no. and description | ||
|---|---|---|
| Designation | Item no | Description |
| X-CC DKH 48 P8S15 | 299937 | Hybrid ceiling clip |
