Mayhew 3-Piece Cold Chisel Set (3/8″, 1/2″, 5/8″)

Heat-treated alloy steel cold chisels forged in the USA — that’s what you’re getting with this Mayhew set. Model 89062 brings you the three most useful sizes for metalworking: 3/8”, 1/2”, and 5/8” cutting widths. The Parker-type tapered shafts and shot blast finish mean these chisels handle real shop abuse.

Mayhew backs these with a lifetime warranty. Not a 90-day warranty. Not a one-year warranty. Lifetime. That tells you something about how they’re built.

Heat-Treated Construction and Real-World Performance

The forged and heat-treated manufacturing process creates chisels that actually hold an edge. Heat treatment provides maximum strength and rust protection. The shot blast finish isn’t just cosmetic — it creates a surface that resists corrosion better than a polished finish would.

Parker-type tapered shafts give you better hammer contact and energy transfer. Less glancing blows, more controlled cuts. The taper design has been around forever because it works.

Specification	Value
Material	Heat-treated alloy steel
Finish	Shot blast finish
Shaft Type	Parker-type tapered shafts
Country of Origin	USA
Warranty	Lifetime warranty

Size Selection and Application Range

Three chisels cover most metalworking needs:

Model	Cutting Width	Length
10302	3/8 inch	5 inches
10402	1/2 inch	6 inches
10502	5/8 inch	6-1/2 inches

Primary uses include cutting rivets, rods, and bolts; removing slag and waste from metal; forming and shaping steel, brass, bronze, cast iron, and aluminum. The 3/8” handles precision work and tight spaces. The 1/2” is your workhorse for general cutting. The 5/8” powers through heavier material removal.

These work on steel, brass, bronze, cast iron, aluminum, and copper — but only metals softer than the cutting edge. Not intended for use on masonry materials. Don’t grab these for concrete work. You’ll ruin the edge and waste a good chisel.

Safety basics: Always wear eye protection during use. Use a hammer appropriate for the chisel size. Keep the cutting edge sharp to prevent glancing blows. Dull chisels are dangerous chisels — they deflect unpredictably.

When they do get dull, regrind to the original factory angle. Do not overheat the tip during grinding to avoid losing temper. A blue edge means you’ve cooked the heat treatment out of it.

FAQ

What’s the difference between Mayhew Select and Pro series? The 89062 belongs to the ‘Select’ series, which is the standard retail line. The ‘Pro’ series often features advanced handles (like in pry bars) or different material finishes.

How do customer ratings look across retailers? Home Depot shows 4.4 stars from 114 reviews. Northern Tool rates them 4.3 stars from 72 reviews. McCoy’s Building Supply gives them 4.8 stars from 4 reviews. Common praise includes durability, edge retention, and sturdy build.

What are the main complaints? Basic finish compared to premium sets. Fair criticism — these don’t have the mirror polish of showcase tools. They’re work tools.

Are these actually made in the USA? Yes — country of origin is USA. Manufactured to professional standards in the USA.

Can these be used on concrete or masonry? No. Incompatible materials include concrete, stone, masonry, and metals harder than the chisel edge. Get proper masonry chisels for that work.