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Orange and yellow insulated 12-point combination wrench 5/16 inch 1000V

Gray Tools

Gray Tools 158B-I 5/16" 12-Point 1000V Insulated Wrench

SKU CH-1C62-61SSW

A 5/16" 12-point combination wrench insulated to 1000 V with dual-colour safety layers, individually tested to ASTM F1505

  • 12-point drive grips fasteners securely
  • 1000 V insulation protects against electrical shock
  • Dual-layer orange and yellow coating shows wear instantly
  • Individually tested to ASTM F1505 standard
  • 5/16 inch hex size fits common applications

1000 V insulated 12-point wrench

The Gray Tools 158B-I is a 5/16 inch combination wrench insulated to 1000 V for electrical work. It is built for technicians who must service live or potentially live equipment. The 12-point drive engages fasteners at multiple angles. Each wrench is individually tested to ASTM F1505 standards.

Dual-layer insulation with visual indicator

An orange outer insulation layer covers a second yellow layer that acts as a wear indicator. If the yellow layer becomes visible the insulation is compromised and the tool must be replaced. This design supports sustained safety during repeated use on energised components. The insulation remains effective up to the rated voltage.

Check fastener size and voltage rating

Verify that the 5/16 inch hex size matches the fasteners on the job. Confirm the system voltage does not exceed 1000 V before use. Inspect the insulation for cuts, abrasion or visible yellow layer before each shift. This wrench is not suited for larger or smaller fastener sizes.

Highlights

  • 12-point drive grips fasteners securely
  • 1000 V insulation protects against electrical shock
  • Dual-layer orange and yellow coating shows wear instantly
  • Individually tested to ASTM F1505 standard
  • 5/16 inch hex size fits common applications

Specifications

BrandGRAY TOOLS

Questions about this item

Does the 1000 V insulated wrench generate heat or noise during continuous use?

The 158B-I is a hand tool with no motor or electronics, so it produces no heat or noise when used all day.

What must I already own for the 12-point 5/16" insulated wrench to work?

No additional equipment is required; the wrench fits 5/16" fasteners directly with its 12-point drive.

Can the orange and yellow insulated wrench be used alongside older non-insulated tools in the same job?

Yes, it functions as a standard combination wrench while its dual-layer insulation adds 1000 V protection per ASTM F1505.

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