In every FTTH, telephone or low-voltage power network, the final few metres of cable between the main line and the customer’s premises are called “drop wires”. Although they look light, they must survive decades of wind, rain, ice and sun. Keeping them firmly in place without damaging the sheath or signal is the job of a component most people never notice—the drop wire clamp.
1. What is a Drop Wire Clamp? A drop wire clamp is a purpose-built fastener that:Grips the cable without crushing itTransfers mechanical load to the pole, wall or messenger wireMaintains the correct sag and bend-radius for optical or electrical performanceResists corrosion, UV and temperature cycling for 25+ years
2. Main Styles at a Glance
| Style | Feature | Typical Use |
| Wedge | One-piece wedge & shell, tool-free | Universal round/flat cables |
| S-Hook | Integrated hanger, quick mount on messenger | Aerial CATV, figure-8 |
| Flat-Clamp | Wide, flat groove + rubber liner | FTTH butterfly drop cable |
| Round-Clamp | Full-circle jaw, high tensile | ADSS, copper self-support |
| Insulated | Nylon or EPDM insert, 1 kV rated | Low-voltage power drops |
3. Materials Matter – Stainless Steel 304/201: >50 kgf clamping force, salt-spray 1 000 h, perfect for coastal areasAluminium Alloy 6061-T6: 30% lighter than steel, cost-effective for rural buildsUV-stabilised PA66: Used for wedge or shell, -40 °C to +85 °C, black for sun protectionEPDM/ Silicone Pad: Increases friction 30%, prevents sheath indentation and micro-bending
4. How to Install (5-Minute Guide) 1. De-energise and lock-out (for power lines)2. Measure cable OD; choose clamp size ±0.3 mm3. Insert cable into body; align arrow “UP” with load direction4. Drive wedge by hand, then 2-3 light hammer taps or torque bolt to 5 Nm5. Hook bail onto messenger or anchor eye; verify pull-out ≥ 0.5 kN6. Seal entry with self-fusing tape if extra moisture protection required7. Record GPS & serial for future O&M
5. Specification Snapshot (Example: Wedge-Type) Cable range: 2-7 mm round, 1.6 × 3.0 mm flat Ultimate strength: ≥1.2 kN Temperature cycling: -40 °C ↔ +85 °C, 100 cycles, no slipSalt-spray: 1 000 h, red rust <5%Compliance: IEC 61284, RUS 7 CFR 1755, RoHS/REACH
6. Why Customers Choose Our Clamps ✅ Zero tool option—field crews finish 30% faster✅ Re-usable wedge—save hardware on cable upgrades✅ Smooth edges—no sheath cutting, longer network life✅ Colour-coded inserts—easy ID during audit or replacement✅ Stock in USA, EU & SEA—2-week lead time worldwide
7. Frequently Asked Questions – Q: Can one clamp fit both 2 mm and 5 mm cables?A: We offer two interchangeable wedges in one body; no extra inventory needed.Q: Will stainless steel galvanically corrode when mounted on aluminium hooks?A: Our clamps are passivated and supplied with nylon isolating washer; 25-year field data shows
8. Order & Customise Today – Standard packs: 100 pcs/box, 10 boxes/carton, 9 kgOEM laser logo on shell or wedge (MOQ 5 000)Custom colours for city branding or utility IDTest report & MTC supplied with every lotSecure drops, reduce truck rolls and extend network life—start with the right drop wire clamp.Contact our sales engineers now for free samples, a quick quote, or a joint field trial.
Media Contact
Company Name: Yongjiu Electric Power Fitting Co., Ltd.
Email: Send Email
Country: China
Website: https://www.yojiu.com/