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Westward spiral flute screw extractor size 7 high speed steel

Westward

Westward screw extractor spiral flute size 7 17/32 in drill high speed steel

SKU CH-M4YF-ST5HC

Removes broken bolts from 1 in. to 1-3/8 in. threads using a 17/32 in. drill and high-speed steel spiral flutes

  • Product typeAngle, Pitch & Slope Locators
  • Removes 1 In. to 1-3/8 In. right-hand bolts
  • Spiral flute bites cleanly into damaged threads
  • High-speed steel body resists wear during extraction
  • 17/32 in drill size prepares correct pilot hole
  • Square drive fits standard 0.602 in wrenches

Screw extractor for large bolts

This Westward spiral-flute extractor removes damaged right-hand threaded bolts from 1 in. to 1-3/8 in. diameter. The 17/32 in. drill size prepares the hole before the extractor engages. High-speed steel construction resists wear during heavy-duty removal tasks. It suits maintenance crews and machinists who encounter seized large fasteners.

Upgrade from straight-flute tools

Spiral flutes bite deeper as torque increases, reducing the chance of the extractor slipping or snapping in stubborn bolts. The square drive accepts a standard wrench or tap handle for controlled leverage. The jump is worth it when straight-flute extractors have already failed or when bolt material is particularly hard.

Limits of spiral-flute extraction

The tool only works on right-hand threads and requires a precisely drilled 17/32 in. hole; an off-centre or oversized hole will cause failure. The .602 in. square drive limits the maximum torque you can apply without a dedicated holder. Extremely corroded or heat-treated bolts may still require heat or a different removal method.

How it compares

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

Price $8.99
Cheaper than about 83% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameWestward
Product typeAngle, Pitch & Slope Locators

Questions about this item

What drill size does the size 7 spiral-flute extractor require?

The extractor is designed for a 17/32 in drill bit to create the pilot hole before extraction.

How do I engage the square drive on this extractor?

Fit a 0.602 in square-drive wrench or socket onto the extractor's drive end and turn counter-clockwise; the spiral flutes bite as you apply steady torque.

When should I replace this high-speed-steel extractor?

Replace it once the spiral flutes show visible rounding or chipping, as dull flutes lose grip on right-hand threaded bolts between 1 in and 1-3/8 in.

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