Ring Terminal BLOW 43-012# insulated, screw 3.7 mm, cable 4.3 mm

The BLOW insulated ring terminal 43-012# is a cable termination component designed to provide a secure, insulated bolted connection. The terminal combines an insulated sleeve with a metal ring lug sized for a 3.7 mm screw, and it accepts a cable with an approximate 4.3 mm conductor or outer diameter. It is intended for use where a compact, reliable ring connection is needed to attach wiring to posts, studs or terminal blocks in automotive, industrial and general electrical installations.

Advantages

The insulated body reduces the risk of accidental short circuits and provides mechanical protection for the conductor. The ring lug is made of conductive metal to ensure low-resistance contact while the screw-compatible hole secures the connection and resists vibration when properly tightened. The compact form factor simplifies installation in confined spaces and the terminal is suitable for repeated inspection and maintenance without soldering.

Suitable for

• Electrical connections to posts and studs in vehicles and machinery
• Terminal block or busbar attachments in control panels
• Repairs and retrofits of wiring harnesses requiring insulated bolted terminations

Key specifications

• Insulated sleeve for electrical protection
• Ring lug with hole diameter for a 3.7 mm screw
• Accepts cable with approximately 4.3 mm conductor or outer diameter
• Metal conductive contact for low-resistance connection
• Compact dimensions suitable for tight installation spaces

How to use

Strip the cable to the appropriate length so the conductor fully enters the metal barrel of the terminal. Insert the conductor into the terminal until it seats firmly in the metal barrel, then secure the connection by crimping the barrel with a suitable crimping tool sized for the terminal. Place the ring lug over the mating stud or post and fasten it with a 3.7 mm diameter screw or bolt, tightening to the torque recommended for the fastener and application to ensure a reliable electrical and mechanical connection. Inspect the insulated sleeve after installation to confirm it covers exposed conductor and provides the intended insulation.

Usage recommendations

Use an appropriately sized crimping tool and the correct screw/bolt for the specified hole diameter. Verify compatibility with the conductor cross-section and insulation diameter before crimping. For applications exposed to vibration or moisture, consider additional protective measures such as thread lock, washers, or dielectric grease as appropriate for the environment.