Kupo

Kupo KG813812 Slim Half-Coupler 16mm Stud

220lbs

High-tensile aluminum half-coupler with integrated 16mm baby stud, rated to 220 lbs for professional rigging.

$25.95*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Kupo KG813812 Slim Half-Coupler is a professional rigging accessory designed to mount lighting fixtures and accessories onto standard 48mm to 51mm pipes and truss. Machined from high-tensile aluminum extrusion, it combines a rated load capacity of 220 lbs (100 kg) with a slim, low-profile body that fits into confined rigging spaces where conventional half-couplers would be too bulky. The integrated 16mm (5/8-inch) baby stud on top allows smaller luminaires, LED panels, and grip accessories to mount directly without requiring an additional spigot or adapter.

A key practical detail is the captive thread design on the wing nut, which keeps the fastener attached to the coupler body at all times. When working overhead on truss or pipe grids, this prevents the wing nut from dropping during installation or adjustment—a meaningful safety advantage on professional sets and stages. The aluminum construction keeps the coupler light enough to minimize added load on the rigging structure while still delivering the strength needed for professional applications. Whether used in a studio, on a film set, or in a live event venue, the KG813812 provides a compact and dependable mounting point for a wide range of lighting and grip equipment.

Key Features

SPECIFICATIONS: Slim type half coupler constructed from high-tensile aluminum extrusion, fits tubes from 48mm to 51mm, rated for 220lbs, includes integrated 16mm baby stud with captive thread design.

BABY PIN MOUNTING: Integrated 16mm stud allows direct attachment of lightweight luminaires and accessories.

LIGHTWEIGHT CAPACITY: Supports loads up to 220lbs for professional lighting applications.

SECURE THREAD DESIGN: Captive thread helps prevent the wing nut from falling during installation.

COMPACT PROFESSIONAL BUILD: Slim aluminum construction fits tight rigging spaces with reliable strength.

Specifications

Brand
Kupo
Model
KG813812
Material
High-Tensile Aluminum Extrusion
Load Capacity
220 lbs (100 kg)
Tube Compatibility
48mm to 51mm
Stud
16mm (5/8") Baby Pin
Thread Design
Captive (anti-drop)
Type
Slim Half-Coupler

Pros & Cons

👍 Pros

  • 220 lb load rating provides strong support for professional lighting fixtures and accessories
  • Slim profile fits into tight rigging spaces where standard half-couplers may not clear
  • Captive wing nut thread prevents hardware from falling during overhead installation
  • Integrated 16mm baby stud eliminates the need for a separate spigot adapter
  • High-tensile aluminum construction keeps weight low while maintaining structural strength

👎 Cons

  • Half-coupler design clamps from one side only, offering less security than a full wrap-around coupler for safety-critical overhead loads
  • Fits only 48mm to 51mm tubes, so it cannot be used on smaller or larger diameter pipe without an adapter
  • Wing nut tightening may loosen over time under vibration and should be periodically checked

Frequently Asked Questions

It is designed to clamp onto pipes and tubes ranging from 48mm to 51mm in diameter, which covers standard truss and rigging pipe sizes.
The Kupo KG813812 is rated to support loads up to 220 lbs (100 kg).
The 16mm (5/8-inch) baby stud allows you to mount lightweight luminaires, small fixtures, and accessories directly to the coupler without needing a separate adapter.
The captive thread prevents the wing nut from separating from the coupler during installation or adjustment, reducing the risk of dropped hardware when working at height.
The slim profile means it has a lower-profile body than standard half-couplers, allowing it to fit into tighter rigging spaces where clearance is limited.