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Galvanized Aircraft Cable | 7x19 Wire Rope Spools

Galvanized aircraft cable is a flexible, corrosion-resistant steel cable for tensioning, tie-down, and utility applications. Holloway Houston supplies Elite Sales 7x19 aircraft cable in 500-foot spools, with galvanized and optional vinyl-coated options for guy wires, safety lines, and mechanical control systems.

Galvanized Aircraft Wire Rope Cable

Galvanized aircraft wire rope cable is a small-diameter, multi-strand wire rope product manufactured from zinc-coated steel wires. The "aircraft cable" designation originates from its historical use in aviation control systems-a design that prioritized flexibility, minimal weight, and high tensile strength in very small diameters. Today, the name carries over into general industry as the universal term for 7x7 and 7x19 wire rope in smaller dimensional ranges.

Holloway Houston Inc. (HHI) supplies premium galvanized aircraft cable from Elite Sales. Compliant with Federal Specification RR-W-410G, this cable stands as the standard for non-lifting applications requiring a balance of weather resistance and mechanical holding power.

Types of Galvanized Aircraft Wire Rope Cable

The physical characteristics of aircraft cable depend entirely on how the individual steel wires are grouped and laid.

1. 7x7 Configuration

The 7x7 aircraft cable uses seven individual strands, with each strand containing seven wires (49 total wires). This layout is physically stiffer than 7x19 at the exact same diameter. The added stiffness makes 7x7 the preferred choice for applications benefiting from minimal cable stretch and less tendency to coil. It holds its shape perfectly in straight-run installations like guy wires, fence tension cables, and structural supports.

2. 7x19 Configuration

The 7x19 aircraft cable utilizes seven strands of nineteen wires each (133 total wires). By using more wires per strand, the individual wires must be smaller in diameter. This yields a cable with vastly higher flexibility than 7x7. It bends easily over tight radii and cycles through sheaves and pulleys with minimal fatigue accumulation. This configuration acts as the industry standard for mechanical control lines, winch cables, and zip lines.

3. Vinyl-Coated Aircraft Cable

Vinyl-coated cable adds an extruded PVC sleeve directly over the galvanized wire rope core. The vinyl jacket provides heavy surface protection where the cable contacts painted surfaces, machinery components, or materials that bare steel would scratch. It also adds a smooth grip surface and visual identification in multi-cable runs. Adding the vinyl coating increases the final outside diameter; for example, a 3/8-inch bare cable measures 7/16-inch outside diameter (OD) once the vinyl is applied.

4. Bare Galvanized Aircraft Cable

Bare galvanized cable is zinc-coated without any additional PVC covering. The zinc galvanizing acts as a sacrificial barrier, oxidizing before the underlying steel to provide primary corrosion protection. Bare cable remains standard for structural and tension applications where surface contact protection is completely unnecessary.

Size and Specifications Guide

Holloway Houston currently stocks the highly versatile 3/8-inch diameter for immediate shipment on standard 500-foot spools.

3/8" 7x19 Galvanized Aircraft Cable (Bare)

  1. Layout: 7x19
  2. Diameter: 3/8 inch
  3. Material: Galvanized (zinc-coated) steel
  4. Specification: Federal Specification RR-W-410G
  5. Spool: 500 ft
  6. Brand: Elite Sales

3/8" 7x19 Vinyl-Coated Galvanized Aircraft Cable

  • Layout: 7x19
  • Core Diameter: 3/8 inch
  • Outside Diameter (with vinyl): 7/16 inch
  • Material: Galvanized steel core, PVC vinyl jacket
  • Specification: Federal Specification RR-W-410G
  • Spool: 500 ft
  • Brand: Elite Sales

Additional diameters ranging from 1/16-inch through 5/16-inch, as well as 7x7 configurations, are available through Holloway Houston. Contact 1-888-496-4700 for exact sizing availability.

Applications by Industry

  • Construction Safety Cables: Safety perimeter cables, debris netting supports, and temporary barrier lines on active job sites. The 7x19 configuration easily routes around corners and through anchor hardware.

  • Guy Wire and Structural Tension: Antenna tower bracing, sign support lines, and structural tension cables where the line runs straight and holds steady under tension.

  • Marine and Dock Applications: Dock lines and mooring aids where the zinc galvanizing provides an active barrier against saltwater, humidity, and atmospheric moisture.

  • Agricultural and Ranch Operations: Fence tensioning, vineyard trellis wiring, and agricultural equipment control lines operating in constant soil and weather contact.

  • Recreational Installations: Zip line guide cables and playground equipment safety lines requiring flexibility over long spans between anchor fittings.

  • Garage Door and Mechanical Systems: Counterbalance cables for heavy doors and mechanical lifting systems utilizing small-diameter sheaves.

Safety, Compliance, and Awareness

Aircraft cable is a general-purpose tension product. Understanding its structural limits prevents field failures.

  1. Not for Overhead Lifting: Galvanized aircraft cable completely lacks the ratings for overhead lifting. Fabricated wire rope slings for overhead lifting are manufactured to ASME B30.9 standards, utilizing specific wire rope layouts, heavy-duty end terminations, and rigorous proof testing.

  2. Break Strength vs. Working Load: Federal Specification RR-W-410G defines the breaking strength of the cable. Breaking strength is a laboratory test value-it is NEVER a Working Load Limit (WLL). You must apply an appropriate safety factor based on your specific engineering requirements to determine a safe operating load.

  3. Corrosion Depletion: Galvanized zinc provides excellent protection, but it depletes over time in salt spray environments, standing water, or when contacting dissimilar metals. Base steel corrosion (red rust) indicates the zinc layer has failed, warranting immediate replacement.

  4. Permanent Kink Damage: Kinks physically deform the steel wires, causing permanent structural damage. The breaking strength drops significantly at the kink point, and mechanical properties never restore even if you straighten the wire.

  5. Termination Sizing: Swage sleeves, crimps, and ferrules are sized strictly by the bare cable diameter. If you use vinyl-coated cable, you must strip the vinyl jacket away at the termination point before applying the bare-metal swage fitting.

  6. Hardware Limits: A cable is only as strong as its end termination. Poorly swaged fittings, improperly torqued wire rope clips, or the wrong thimble size will pull through at a fraction of the cable's actual break strength.

Frequently Asked Questions

It is a small-diameter, flexible wire rope made from zinc-coated steel wires in 7x7 or 7x19 strand configurations. Originally used for airplane control systems, the term now applies to any wire rope utilizing these standard layouts in smaller diameters. It complies with Federal Specification RR-W-410G.
The 7x7 layout uses seven strands of seven wires. It is stiffer and holds its shape well for straight-run installations like guy wires. The 7x19 layout uses seven strands of nineteen wires, yielding a much more flexible cable that bends easily through sheaves, pulleys, and complex hardware routing.
No. Galvanized aircraft cable lacks the manufacturing standards and ratings required for overhead lifting. Overhead wire rope slings are fabricated to ASME B30.9 standards with specific terminations and proof testing. Aircraft cable does not carry ASME B30.9 WLL ratings.
Galvanized means the individual steel wires are chemically coated with zinc before being twisted into the final rope. The zinc acts as a sacrificial barrier, oxidizing over time to prevent the underlying steel from rusting in damp or outdoor environments.
Under Federal Specification RR-W-410G, the 3/8-inch 7x19 bare core has a tested breaking strength of 14,400 lbs. This is a manufacturer's break test specification, NOT a Working Load Limit. Application-specific working loads must be determined by a qualified engineer.
Holloway Houston stocks Elite Sales galvanized aircraft cable in standard 500-foot spools, which covers the majority of job-site and facility maintenance requirements.
Common applications include tower guy wires, construction safety cables, fence tension lines, marine hardware, zip lines, and garage door counterbalance systems.

Complete Your Wire Rope and Rigging Needs

Holloway Houston stocks the required hardware to properly terminate and tension your aircraft cable installations:

  • Wire Rope Slings : Fully fabricated wire rope slings compliant with ASME B30.9 for overhead crane and rigging operations.

  • Wire Rope Clips : Heavy-duty Crosby wire rope clips for forming secure field terminations and eyes.

  • Swage Fittings : Aluminum and copper swage sleeves, ferrules, and thimbles specifically sized for aircraft cable terminations.

  • Load Securement : Transport tie-down products, ratchet straps, and chain binders for flatbed cargo securement.

Need Bulk Spools or Custom Sizing?

If your facility requires a specific diameter, a rigid 7x7 layout, longer bulk spool lengths, or specific cut-to-length cable orders, contact our Houston distribution center. Call 1-888-496-4700 to confirm inventory and arrange immediate freight shipping.