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 it

Transfers mechanical load to the pole, wall or messenger wire

Maintains the correct sag and bend-radius for optical or electrical performance

Resists 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 areas

Aluminium Alloy 6061-T6: 30% lighter than steel, cost-effective for rural builds

UV-stabilised PA66: Used for wedge or shell, -40 °C to +85 °C, black for sun protection

EPDM/ 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 mm

3. Insert cable into body; align arrow “UP” with load direction

4. Drive wedge by hand, then 2-3 light hammer taps or torque bolt to 5 Nm

5. Hook bail onto messenger or anchor eye; verify pull-out ≥ 0.5 kN

6. Seal entry with self-fusing tape if extra moisture protection required

7. 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 slip

Salt-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 <20 µm corrosion.

Q: Do you supply pre-assembled kits?

A: Yes—clamp + stainless bail + wedge + anchor bolt in one PE bag, ready for bucket truck.
8. Order & Customise Today

Standard packs: 100 pcs/box, 10 boxes/carton, 9 kg

OEM laser logo on shell or wedge (MOQ 5 000)

Custom colours for city branding or utility ID

Test report & MTC supplied with every lot

Secure 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.