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A polished chrome 4mm hex socket bit with alloy steel construction and a long reach

Westward

Westward 54TM20 4mm Hex Socket Bit

SKU CH-RBQW-JKNYM

A 4 mm hex socket bit with a 1/4 inch drive, 4-3/4 inch overall length and alloy steel construction

  • Product typeSocket
  • Alloy steel construction resists wear
  • 4 mm hex tip fits metric fasteners
  • 4-3/4 inch overall length reaches deep recesses
  • Full polished chrome finish prevents corrosion
  • Meets ASME B18.3.2M-1979 standard

Westward 54TM20 4mm Hex Bit

This Westward 54TM20 is a 4 mm metric hex socket bit made from alloy steel with a full polished chrome finish. It is designed for technicians and mechanics who need a durable bit for driving 4 mm hex fasteners in automotive and general mechanical work.

Check your 1/4 inch drive tools

The bit uses a 1/4 inch drive size and an overall length of 4-3/4 inches with an insert length of 3-7/8 inches. Verify that your ratchet or driver accepts 1/4 inch drive bits and that the extra-long socket depth suits the fastener access on your job.

Replaces worn or missing 4 mm hex bits

This bit replaces a damaged or lost 4 mm hex bit in a 1/4 inch drive set. The upgrade is worth it when the previous bit has rounded corners or when a longer reach is needed for recessed fasteners, and the ASME B18.3.2M-1979 standard matches your application requirements.

How it compares

Measured against everything we stock in Pliers, Wrenches & Gripping Tools, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 94% of the 2,110 comparable items (median $23.99).

Specifications

Product
Brand nameWESTWARD
Product typeSocket

Questions about this item

What comes in the box with the Westward 54TM20 hex socket bit?

The package contains the single 4mm hex socket bit. No additional accessories or drive tools are included.

Which drive size and tip size should I select for a 4mm fastener?

Choose the version with a 1/4 inch drive and a 4mm hex tip to match the fastener.

What does the 4-3/4 inch overall length mean when the bit is fitted to a ratchet?

It measures the total length from the drive end to the tip, giving extra reach into deep recesses.

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