Nilight Barrel Spring Mounting Base for Whip Light & CB Antenna — Black Carbon Steel, M12×30 Thread

Nilight's heavy-duty barrel spring mounting base is a durable spring-loaded bracket designed to secure whip lights and CB antennas while protecting them from impact and bending.

This replacement mounting base fits whip lights, fiberglass CB antennas, center-load antennas and similar poles that use a screw diameter between 0.448" and 0.465". Constructed from high-strength carbon steel with a thick black powder coat and stainless-steel hardware, the spring base resists rust and deformation while allowing the whip or antenna to flex under force instead of snapping. The set includes one spring base, one stainless nut and two washers and installs quickly using an M12*30 threaded screw through a 0.47" hole in your vehicle or bracket.

Will this mount fit my existing whip light or antenna?

The mount is made for shafts that use screws with a minimum diameter of 0.448" and a maximum of 0.465" and fits non-spring base models only. Confirm the screw diameter and that your current mounting hole is roughly 0.47" before ordering. If dimensions match, the M12*30 threaded base secures through standard brackets on many vehicles.

• Compatible screw diameter: 0.448"–0.465"
• Required vehicle/bracket hole: ~0.47"
• Thread size for mounting: M12*30
• Not compatible with existing spring-base whip models

How does the spring design protect my whip light or antenna?

The spring element lets the whip or antenna bend and rebound when it hits low branches, tunnel ceilings, or strong gusts. That flexible motion spreads impact energy across the assembly instead of concentrating it at a brittle joint, reducing the chance of breakage. The steel construction maintains shape while the spring absorbs shock.

• Spring flexes to deflect impacts and reduce stress
• Carbon steel body resists deformation under load
• Powder coating and stainless hardware shield against corrosion
• Simple rebound action returns whip to upright position

What materials and hardware come with the mount?

Each package contains one barrel spring base plus stainless-steel mounting hardware: one nut and two washers. The base is high-strength carbon steel with a thick black powder-coated finish for water and dust resistance. Stainless hardware prevents rust where the fasteners meet the mount.

• Base: high-strength carbon steel, black powder-coated
• Included: 1 stainless nut, 2 stainless washers
• Finish: smooth, easy-to-clean powder coat
• Designed for outdoor exposure and off-road conditions

How easy is installation and what vehicles will it work on?

Installation is straightforward and typically takes under 10 minutes: position the base, thread the M12*30 screw through a ~0.47" hole, and secure with the supplied nut and washers. The mount fits many off-road and utility vehicles provided the hole and screw sizes match, including UTVs, ATVs, trucks, dune buggies and golf carts.

• Typical install time: under 10 minutes
• Common compatible vehicles: UTV, ATV, truck, golf cart, dune buggy
• Check existing bracket hole size before purchase
• Works with Nilight and many aftermarket whip lights (non-spring models)

Who is this for: This heavy-duty spring mounting base is intended for vehicle owners, off-road enthusiasts and fleet operators who need a rugged, flexible mount for whip lights or antennas. If you require a replacement for a non-spring mount, want added protection against environmental impacts, and can confirm the screw and hole sizes, this Nilight spring base offers a fast, corrosion-resistant upgrade to prolong the life of your whip lights and antennas.