Allen Nuts

An allen nut is driven with an Allen (hex) key rather than an open wrench, using an internal or recessed drive so it can be tightened in tight clearances and where a wrench cannot swing. The recessed drive also gives a cleaner, lower-profile look. Eugene Fastener & Supply stocks allen nuts in steel and stainless.

They pair naturally with socket head cap screws and other Allen-driven hardware so one tool does the job. By the piece or in bulk, same-day shipping before 2pm Pacific.

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Allen Nuts — Hex-Key Driven

Need these for a production run or a specific size?

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When to Use an Allen Nut

Choose an allen nut where a standard wrench cannot reach or swing, where a low-profile recessed drive is wanted, or to standardize on Allen-key tooling alongside socket head cap screws. Tell us the thread, drive size, and material and we will confirm the right part.

Note: confirm the exact drive style and head form for your application — our team can match an existing sample or part number.

FAQ

What is an allen nut?

An allen nut is a nut driven with an Allen (hex) key through an internal or recessed drive, rather than an open wrench. It suits tight clearances and gives a clean, low-profile look, and it pairs with Allen-driven hardware so one tool serves the joint.

Why use an allen nut instead of a hex nut?

Use one where a wrench cannot reach or swing, where you want a recessed low-profile drive, or to standardize on hex-key tooling with socket head cap screws.

What sizes and materials are available?

Steel and stainless in common threads and drive sizes. Send us the thread, drive, and any sample or part number and we will match it.

Can you cross-reference a specific allen nut?

Yes. Send a sample or part number and we will match it to a stocked equivalent or source it, usually the same business day.

Why Buy from Eugene Fastener

  • By the piece or in bulk, with cross-reference help.
  • Same-day shipping on orders placed before 2pm Pacific.
  • Since 1969 — serving Pacific Northwest manufacturers, contractors, and equipment makers for over 55 years.

Allen nuts pair with socket head cap screws and other hex-key hardware. Browse all nut types or contact our sales team for sizing, cross-references, or bulk pricing. Eugene Fastener & Supply — serving the Pacific Northwest since 1969.

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