Radians Industrial Hard Hat — Quartz Full Brim, Type I, Class E, Made in USA

What the Radians Industrial Hard Hat Is

Behind a generic listing name sits a specific, capable helmet: the Radians Quartz full brim, QHR4. The shell is high-density polyethylene, made in the USA, and the 360-degree brim runs the whole way round rather than peaking at the front — which sheds sun, rain and falling debris from the ears and neck that a cap-style hat leaves exposed. Underneath is a 4-point ratchet suspension with a pillowed brow pad, a nape cushion and vertical height adjustment, so you can set both the tension and how low the helmet sits.

It meets ANSI Z89.1 as Type I, Class G and E — and that dual electrical class is worth pausing on. Because the shell is non-vented, it can carry the electrical rating that a vented shell cannot, which makes it a natural fit for electrical and utility work where you also want all-day shade. Compare it against the field in our full-brim guide, or against the cap-style options in the cap-style guide.

Why "Class G and E" Is Legitimate — and "Class C, G and E" Is Not

Electrical classes are easy to misread on a spec sheet, and this helmet is a clean example of the rule. There are three: Class C (Conductive) provides no dielectric protection at all, usually because the shell is vented or otherwise conductive; Class G (General) is tested at 2,200 volts; and Class E (Electrical) is tested at 20,000 volts. Because a shell that passes 20,000 volts has by definition passed 2,200, a Class E hat is automatically Class G — the two are the same barrier described at two levels, so they belong together.

Class C is the one that cannot join them. It is not a lower rung of the same ladder; it is a separate category meaning the helmet does not insulate, so a listing that claims "Class C, G and E" on one shell is describing a product line across vented and non-vented shells, not a single hat — the hard hat rankings keep the classes straight. This Radians is the clean case: a non-vented shell carrying G and E, with no contradiction. For electrical exposure, that interior stamp reading Class E is exactly what you are looking for — the Pyramex Ridgeline XR7 is another Type I Class E option if you want to compare.

Pros & Cons

Specifications

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Frequently Asked Questions

Is this a cap style or a full brim?

A full brim — the Radians Quartz, part number QHR4. The store listing calls it simply an industrial hard hat, which undersells it: this is the 360-degree full brim, not a cap style. The brim runs the whole way round, which is the practical difference from a peaked cap-style hat and the reason to choose it for sun and rain.

Can a hard hat really be both Class G and Class E?

Yes, and this is a genuine dual rating rather than a marketing overreach. Class E is tested at 20,000 volts; Class G at 2,200 volts. Because passing the 20,000-volt test automatically satisfies the 2,200-volt one, a Class E shell is Class G as well — the two legitimately coexist. What cannot coexist is Class C with either, since Class C means no electrical protection at all. This helmet is non-vented and carries E and G.

Does the full brim make it good for electrical and outdoor work?

That combination is exactly where a Class E full brim earns its place. Utility, line and outdoor electrical work want both the electrical rating and all-day sun protection, and this helmet supplies both — the non-vented shell for the Class E rating and the 360-degree brim for shade around the neck and ears. It is a more specific niche than a plain cap-style hat, and a good fit for it.

Why is the shell non-vented?

Because the electrical rating requires it. Vents are openings in the shell, and a shell with openings cannot be tested as a dielectric barrier, so every vented hard hat on the market is Class C with no electrical protection. This helmet trades the cooling of vents for the Class E rating — if you need electrical protection, that trade is not optional, and if you do not, a vented full brim will run cooler.

What is the suspension like?

A 4-point ratchet with a pillowed brow pad, a nape cushion at the back, and vertical height adjustment. The ratchet dials in with one hand, the pillowed brow pad cushions the forehead where sweat and pressure concentrate, and the nape cushion softens the back of the neck. Vertical height adjustment lets you set how low the helmet sits, which changes both fit and how much the brim shades your eyes.

What does "made in USA" actually tell me?

That this specific model is manufactured domestically, which some buyers and contracts require. It is a sourcing fact rather than a performance one — it does not change the ANSI rating, which is what governs protection — but for Buy American provisions or preference policies it is the detail that matters, so it is worth confirming on the current packaging if a contract depends on it.

Is it Type I or Type II?

Type I — top impact only. Type II adds lateral protection to the front, back and sides, and a full brim does not by itself confer Type II; brim shape and impact type are independent. If your job hazard analysis specifies Type II, you need a rated Type 2 safety helmet rather than this.

What shell material is it, and what are its limits?

High-density polyethylene — the standard industrial hard hat material, tough and economical for general construction and utility duty. Like all thermoplastic shells it is not intended for high radiant heat or molten metal exposure, which call for materials specified for those environments. For the electrical, construction and outdoor work this helmet is built for, HDPE is entirely appropriate.

How should full brim hard hats be stored?

Not stacked. Full brims do not nest the way cap-style shells do, so a pile loads the brims rather than the crowns, which bends brims and stresses shells. Store them on a shelf, on hooks or in individual bags, out of direct sunlight — UV degrades any thermoplastic shell over time, and a hat left on a dashboard ages far faster than one kept in a cab.

How do I verify the rating and the helmet's age?

The Type and Class are molded inside the shell — read that stamp rather than relying on listing text, especially before depending on the Class E rating for electrical work. The date of manufacture is also stamped inside, usually as a clock-face marking the month and year. Combine that with the manufacturer's service-life guidance, retire the helmet after any impact, and replace it on signs of cracking, chalking or UV brittleness.

Can I drill it or add stickers?

Never drill or modify a shell — a single hole compromises impact performance and voids the electrical rating outright, which matters more here than on a Class C hat because you may be relying on that rating around live conductors. Stickers can hide developing cracks and some adhesives attack the plastic, so keep them minimal and off the crown, and do not paint the shell, since solvents degrade it. The same care applies across the head protection range.

Does the brim color or hi-viz shell change protection?

No — color is about visibility, not impact or electrical protection. A lighter or hi-viz shell makes a worker easier to spot, and on many sites hard hat color signals role or trade, so check the site convention before choosing. The white shell of this SKU is a common default; the protection is identical whatever the color.