Cable Clip and Cable Tie Sizing Chart: Outer Diameter Match, EN 62275 Tensile & UV Ratings
Matching concrete nail cable clips (mm) to CAT6, RG6, H05VV-F, NYM, and NYY outer diameters, fixing spacing rules, and EN 62275 PA6.6 vs stainless steel cable tie tensile selection.
Proper cable clip and cable tie sizing prevents conductor sag, jacket abrasion, and premature outdoor failure across surface-mounted conduits, cable trays, and control panels. Cable clip numbers are always selected by the cable's overall outer sheath diameter (`mm`)—never by conductor cross-section (`mm²`)—while cable ties are specified by loop tensile strength (`N`) and UV/temperature class under EN 62275 (IEC 62275).
> Related Category: Compare clip diameters and tie materials directly in Cable Clips, Concrete Nail Clips, and Cable Ties.
Concrete nail clip size chart by cable outer diameter
Round concrete nail clips combine an impact-resistant HDPE/PP saddle with a hardened steel masonry nail. Undersized clips crush PVC/XLPE insulation during hammering, whereas oversized clips allow lateral slip and visible wave sag:
| Cable type & core size | Typical outer diameter (mm) | Recommended clip size | Typical installation |
|---|---|---|---|
| CAT5e / CAT6 UTP data cable | 5.2 – 6.2 mm | 5 mm or 6 mm | Surface low-voltage & office drops |
| RG6/U4 – RG6/U6 coaxial cable | 6.8 – 7.2 mm | 7 mm | Satellite, CCTV, and riser shafts |
| H05VV-F (TTR) 2×0.75 – 3×1.5 mm² | 5.8 – 8.2 mm | 6 – 8 mm | Indoor control and appliance leads |
| H05VV-F (TTR) 3×2.5 mm² | 9.2 – 10.2 mm | 9 mm or 10 mm | Workshop surface socket drops |
| NYM 3×1.5 mm² | 8.8 – 9.6 mm | 9 mm or 10 mm | Basement & garage lighting circuits |
| NYM 3×2.5 mm² | 10.2 – 11.5 mm | 10 mm or 12 mm | Damp-area surface socket circuits |
| NYM 4×4 / 5×2.5 mm² or NYY 3×2.5 mm² | 12.0 – 14.0 mm | 12 mm or 14 mm | Sub-panel & outdoor unit feeders |
| NYY 4×6 / 5×4 / 5×6 mm² | 15.0 – 18.5 mm | 16 – 20 mm | Three-phase feeders & exterior runs |
For damp-area cable jacket differences, see What Is NYM (Antigron) Cable vs TTR and NYY.
Clip spacing rules and adhesive mount preparation
- Horizontal wall and ceiling runs: Space clips every 25 – 30 cm (keep ≤25 cm overhead to prevent visible sag).
- Vertical risers: Space clips every 35 – 40 cm along solid masonry or concrete.
- Bends and enclosure entries: Place a clip 8 – 10 cm before and after every 90° bend or junction-box gland, maintaining a minimum bend radius of 4 × outer cable diameter.
- Self-adhesive mounts: Use adhesive clips only on degreased, dust-free painted steel, glass, or enclosures (clean with isopropyl alcohol and allow 15 – 30 minutes of dwell time before loading). On heavy bundles or warm panels, drive a screw through the center fixing hole.
EN 62275 cable tie dimensions, loop tensile strength, and UV classes
Cable ties are rated by strap width and minimum loop tensile strength under EN 62275:
| Width × Typical length | Max bundle diameter | Min. loop tensile strength | Typical duty |
|---|---|---|---|
| 2.5 × 100 – 200 mm | 22 – 50 mm | 80 N (~8 kgf) | Fine panel wiring & PLC I/O looms |
| 3.6 × 150 – 300 mm | 35 – 80 mm | 180 N (~18 kgf) | Data bundles, sensors & spiral conduits |
| 4.8 × 200 – 370 mm | 50 – 102 mm | 220 N (~22 kgf) | Standard tray power cables & general electrical work |
| 7.6 × 300 – 450 mm | 80 – 130 mm | 540 N (~55 kgf) | Multi-core NYY/N2XH feeders & heavy flexible conduits |
| 9.0 × 450 – 750 mm | 130 – 220 mm | 780 N (~80 kgf) | Heavy industrial risers & HVAC ducting |
Material selection rules:
- Natural (white) Polyamide 6.6 (PA6.6): Halogen-free, rated -40 °C to +85 °C, strictly for indoor panels and enclosed trunking. Direct sunlight degrades natural PA6.6 within months.
- UV-stabilized black PA6.6 (~2% carbon black): Mandatory for outdoor cable trays, rooftops, and facade conduits exposed to solar UV radiation.
- AISI 304 / 316 stainless steel cable ties: Ball-lock stainless steel cable ties withstand -80 °C to +538 °C, fire, and chemical corrosion—essential for PV string routing (solar panel and H1Z2Z2-K cable guide), marine decks, and fire-rated escape routes where melting plastic ties could drop overhead cables.
Frequently asked questions
What clip size fits a 3×2.5 mm² NYM or H05VV-F cable?
A 3×2.5 mm² H05VV-F flexible cable (~9.5 mm OD) takes a 9 mm or 10 mm nail clip, whereas a 3×2.5 mm² filled NYM cable (~10.5–11.5 mm OD) typically requires a 10 mm or 12 mm clip depending on manufacturer jacket thickness.
Are all black cable ties UV resistant?
Only PA6.6 ties compounded with finely dispersed carbon black (~2% by weight) provide true outdoor UV stabilization; dyed black ties without UV stabilizer still embrittle outdoors, so always verify UV resistance in technical specifications.
Do masonry nail clips hold in drywall or aerated concrete (AAC)?
No. Hardened short masonry nails pull out of gypsum board and porous AAC blocks. Use screw-and-plug saddle clips or dedicated drywall/AAC anchors instead.
When are stainless steel cable ties required instead of nylon?
Use AISI 304/316 steel ties in fire-escape corridors and tunnels (so cables cannot fall during a fire), petrochemical/marine atmospheres, and 25-year utility or rooftop solar arrays.