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Greenlee NR1 nut runner with H8508 adapter, silver metal finish, cylindrical body, knurled grip, quick-change hex socket end

Greenlee

Greenlee NR1 nut runner with H8508 adapter 13 16 8508

SKU CH-G4TA-V5R55

Nut runner with H8508 adapter fits 1, 13/16, 3/4 and 5/8 inch nuts and includes a 7/16 inch hex quick-change adapter

  • Product typeAngle, Pitch & Slope Locators
  • Fits 1 in., 13/16 in., 3/4 in., 5/8 in. nuts
  • Quick-change 7/16 in. hex adapter included
  • 9 1/2 in. overall length for reach
  • 1 3/4 in. diameter for tight spaces
  • Greenlee professional-grade construction ensures durability

Nut Runner With H8508 Adapter

This Greenlee nut runner is designed for technicians who need to fasten or remove hex nuts in electrical and mechanical assemblies. It accepts the H8508 and H8508-1V adapter models for direct compatibility with existing tool systems.

Fits 13 16 And 7/16 Hex Quick Change

The tool works with nut sizes of 1 inch, 13/16 inch, 3/4 inch and 5/8 inch. A 7/16 inch hex quick-change adapter is included so the runner can be swapped into a compatible driver without additional hardware.

Sustained Torque In Confined Spaces

With an overall length of 9 1/2 inches and a diameter of 1 3/4 inches, the runner reaches into deep or tight locations while transmitting continuous turning force. It is not suited for applications requiring impact driving or powered rotation beyond manual effort.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $187.99
Pricier than about 90% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameGreenlee
Product typeAngle, Pitch & Slope Locators

Questions about this item

How long can the 7-3/4 inch nut runner run before the 7/16 hex quick-change adapter overheats?

The adapter is built for continuous hand-driven use; heat buildup is minimal because there is no motor or battery to generate sustained temperature rise.

How loud is the Greenlee NR1 when driving 1 inch nuts all day?

Operation is quiet — only the ratchet clicks and socket engagement are audible, with no motor whine or impact noise.

What drive tool must I already own to turn the 7/16 hex quick-change adapter?

Any 7/16 inch hex bit holder — impact driver, drill chuck or ratchet with a hex bit socket — will engage the adapter directly.

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