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8mm 3/8" drive 12-point insulated socket with orange and yellow layers

Gray Tools

Gray Tools MT8-I 8mm 3/8" Drive 12 Point 1000V Insulated Socket

SKU CH-9E4A-HEHJF

An 8 mm insulated socket with a 12-point drive rated for 1000 V and tested to ASTM F1505

  • Insulated to 1000 V for live electrical work
  • Dual orange and yellow layers show insulation integrity at a glance
  • 12-point drive engages fasteners from multiple angles
  • Tested to ASTM F1505 standard for verified protection
  • 8 mm hex fits common metric fasteners

8mm 3/8" Drive Insulated Socket

The Gray Tools MT8-I is an 8 mm socket with a 3/8 inch drive, built for electricians and maintenance technicians working on live low-voltage equipment. Its 12-point opening engages fasteners from multiple angles in tight spaces. The tool meets ASTM F1505 test requirements for insulated hand tools.

Dual-Layer Insulation System

An orange outer insulation layer covers a yellow inner layer that acts as a visual safety indicator; damage to the orange layer reveals the yellow beneath, signalling that the socket must be replaced. Each piece is individually insulated and tested to confirm protection up to 1000 V. This construction helps users spot wear before insulation integrity is lost.

1000 V Working Limit

The socket is rated for 1000 V AC and DC, suitable for many industrial control panels and hybrid vehicle service tasks. It is not intended for high-voltage distribution work exceeding that rating. The 12-point drive provides adequate engagement for standard hex fasteners but may round damaged or corroded heads more readily than a 6-point design.

Tool Storage Category Placement

Listed under Garage Storage, the socket fits into modular tool chests or insulated tool rolls for organised transport. No storage case or tray is included with the single unit. Buyers needing a full insulated set or larger drive sizes must source additional pieces separately.

How it compares

Measured against everything we stock in Tool Bags & Storage Cases, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 63% of the 2,748 comparable items (median $20.99).

Specifications

Product
Brand nameGRAY TOOLS

Questions about this item

When does the orange insulation need to be replaced on the MT8-I socket?

Replace the socket once the yellow safety layer becomes visible through the orange insulation, as the dual-layer design uses the yellow layer as a wear indicator.

What voltage limit applies to the 1000V insulated socket during continuous use?

The socket is individually tested to ASTM F1505 standards and rated for user protection up to 1000 V.

Does the 12-point drive generate noticeable heat when used all day?

The insulated socket has no moving parts or electrical load, so it does not produce heat during extended hand-tool operation.

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