[Lifetime Warranty] SEWA20 Adjustable Lock-nut Grinder Wrench
Two SEWA20 adjustable lock-nut grinder wrenches with blue ergonomic handles and black metal heads.
SEWA20 adjustable lock-nut grinder wrench showing 7.4-inch length and wide compatibility with major power tool brands.
Angle grinder with SEWA20 adjustable lock-nut wrench benefits infographic.
SEWA20 adjustable grinder wrench showing carbon steel construction and heat-treated pins with a blue handle.
SEWA20 adjustable grinder wrench featuring a blue rubber-dipped handle for a firm, comfortable grip.
Worker using an angle grinder in a workshop with SEWA20 adjustable lock-nut grinder wrench visible on the workbench.
Two SEWA20 adjustable lock-nut grinder wrenches with blue ergonomic handles and black metal heads.
SEWA20 adjustable lock-nut grinder wrench showing 7.4-inch length and wide compatibility with major power tool brands.
Angle grinder with SEWA20 adjustable lock-nut wrench benefits infographic.
SEWA20 adjustable grinder wrench showing carbon steel construction and heat-treated pins with a blue handle.
SEWA20 adjustable grinder wrench featuring a blue rubber-dipped handle for a firm, comfortable grip.
Worker using an angle grinder in a workshop with SEWA20 adjustable lock-nut grinder wrench visible on the workbench.
Lifetime Warranty

[Lifetime Warranty] SEWA20 Adjustable Lock-nut Grinder Wrench

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SEWA20 Adjustable Lock-nut Grinder Wrench

Key Features

  • Adjustable design fits lock-nuts with pin hole spacing from 10mm to 30mm.
  • Universal pin wrench for securing or removing grinding wheels and cut-off discs.
  • Durable steel construction for tool longevity.
  • Cushioned handle provides a secure grip during use.

Replaces / Cross-Reference Part Numbers

  • SEWA20
  • SEWA20-2PK

Compatibility & Fitment

  • Fits most angle grinders, bench grinders, circular saws, and miter saws.
  • Compatible with major brands including Makita, Bosch, DeWalt, Hitachi, Milwaukee, and Metabo.
  • Directly fits Bosch models 1700A and 1701A.
  • Designed for lock-nuts and flanges requiring a two-pin spanner wrench.

When to Replace

  • Original manufacturer-supplied wrench is lost or misplaced.
  • Existing wrench pins are bent, broken, or excessively worn.
  • The adjustment mechanism on a current wrench is stripped or non-functional.

Installation Tips

  • Always disconnect the tool from its power source before changing accessories.
  • Engage the grinder's spindle lock to prevent rotation.
  • Adjust the wrench pins to align with the holes on the lock-nut or flange.
  • Ensure the pins are fully seated in the holes before applying rotational force.
  • Turn counter-clockwise to loosen and clockwise to tighten the lock-nut.
  • Do not over-tighten the nut; secure it firmly as per the tool manufacturer's specification.
Color
‎Blue
Brand
‎BlueStars
Material
‎Carbon Steel, Rubber
Item Length
‎7.25 Inches
Item Package Quantity
‎1
Head Style
‎C Shaped
Finish Type
‎Powder Coated
Operation Mode
‎Mechanical
Manufacturer
‎BlueStars
Part Number
‎SEWA20
Item Weight
‎9.9 ounces
Style
‎Pack of 2
Finish
‎Powder Coated
Power Source
‎hand_powered
Included Components
‎Adjustable
Batteries Included?
‎No
Batteries Required?
‎No

FAQ

This wrench is used to loosen or tighten lock nuts on angle grinders and similar tools that use a two-hole spanner-style retaining nut. It is typically used when changing grinding wheels, cutoff wheels, or other attachments held by a lock nut.
This wrench is intended for grinders that use a lock nut with pin holes for a spanner-style tool. The most important match points are the lock-nut style and the spacing range the adjustable pins can cover. Compare your grinder's lock nut to the wrench design and confirm the pin engagement pattern matches your tool before ordering.
Common reasons to replace it include bent or worn pins, slipping during use, spreading at the adjustment points, or losing the original wrench that came with the grinder. If the wrench no longer seats securely in the lock nut holes, it should be replaced to help avoid damaging the nut.
First disconnect power or remove the battery. Lock the grinder spindle using the spindle-lock button, place the wrench pins into the lock nut holes, and turn the nut to loosen or tighten as needed. Make sure the pins are fully seated before applying force to reduce the chance of slipping.
Lock nuts often become hard to remove from over-tightening, wheel binding during use, metal dust buildup, corrosion, or debris packed around the spindle threads. Cleaning the area and making sure the spindle lock is fully engaged can help. If the nut or holes are already damaged, the lock nut itself may also need replacement.