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Greenlee 6678 steel draw stud 3/8 by 1-5/8 inches

Greenlee

Greenlee 6678 Draw Stud electrician tool

SKU CH-F1TT-S6Q2C

A steel knockout draw stud sized 3/8 in by 1-5/8 in for use with manual drivers and half-inch punch and die sets

  • 3/8" x 1-5/8" draw stud fits 1/2" punch and die sets
  • Steel construction withstands repeated knockout operations
  • Designed for use with manual hydraulic drivers
  • Greenlee 6678 model ensures reliable hole-making performance

Greenlee 6678 Knockout Draw Stud

The Greenlee 6678 is a knockout draw stud made from steel for use with manual drivers. It measures 3/8 in by 1-5/8 in and is designed for 1/2 in punch and die sets. Electricians use it to pull punches through pre-drilled holes in electrical boxes and panels.

Electricians running manual hydraulic

This stud suits electricians running manual hydraulic or ratchet drivers who need a 3/8 in draw stud for 1/2 in conduit knockouts. It is not for installers using battery-powered or pump-driven systems that require a different thread pitch or pull-pin diameter, nor for jobs needing larger conduit sizes.

Highlights

  • 3/8" x 1-5/8" draw stud fits 1/2" punch and die sets
  • Steel construction withstands repeated knockout operations
  • Designed for use with manual hydraulic drivers
  • Greenlee 6678 model ensures reliable hole-making performance

Specifications

BrandGREENLEE

Questions about this item

How long does the 3/8 in draw stud last under continuous punching?

The Greenlee 6678 is made from hardened steel, so it resists deformation during repeated knockout operations.

Does the draw stud generate noticeable heat or vibration during all-day use?

As a manual accessory, it produces no motor heat or vibration; only the driver transmits force.

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