What is a hexagon die nut used for?

It’s a hex-profile thread die for rethreading and repairing external threads on bolts, studs and threaded rods—especially where access is tight and a spanner is easier to use than a die stock.

Which materials can I rethread with this HSS die?

Typical applications include structural, carbon and free-cutting steels, case-hardening and unalloyed quenched & tempered steels up to ~750 N/mm², steel castings, zinc alloys, copper, bronze and selected plastics such as POM or PVC.

Why choose a hex die nut over a round die?

The hexagon body can be driven with a ring or open-end spanner, making it ideal for field repairs and hard-to-reach spots where a die holder doesn’t fit.

Do I need special accessories?

No special holder is required. A standard ring or open-end spanner is sufficient. Always use cutting oil or paste for best results.

Any tips to extend tool life and get clean threads?

Start square, use plenty of cutting fluid, advance in small increments and periodically back off to break chips. Clean the thread after reworking and verify with a matching BSF nut.

What is a hexagon die nut used for?

It’s a hex-profile thread die for rethreading and repairing external threads on bolts, studs and threaded rods—especially where access is tight and a spanner is easier to use than a die stock.

Which materials can I rethread with this HSS die?

Typical applications include structural, carbon and free-cutting steels, case-hardening and unalloyed quenched & tempered steels up to ~750 N/mm², steel castings, zinc alloys, copper, bronze and selected plastics such as POM or PVC.

Why choose a hex die nut over a round die?

The hexagon body can be driven with a ring or open-end spanner, making it ideal for field repairs and hard-to-reach spots where a die holder doesn’t fit.

Do I need special accessories?

No special holder is required. A standard ring or open-end spanner is sufficient. Always use cutting oil or paste for best results.

Any tips to extend tool life and get clean threads?

Start square, use plenty of cutting fluid, advance in small increments and periodically back off to break chips. Clean the thread after reworking and verify with a matching BSF nut.

High-quality hex die for rethreading and cutting external threads.

BSF (brit. standard fine)

Hexagon Die Nut DIN 382 HSS - BSF 3/8 x 20

Name: VÖLKEL Hexagon Die Nut DIN 382 HSS – BSF
Brand: VÖLKEL
Availability: InStock

Item no. 22518

€21.40

in stock - more than 10 pieces available

VÖLKEL delivers exclusively to specialized dealers. Online you can buy VÖLKEL products here.

The prices are in Euro plus VAT and shipping, insurance and packaging costs.

Application

VÖLKEL Hexagon Die Nut DIN 382 HSS – BSF

When you need fast, reliable external thread repair in tight spaces, this hexagon die nut is the right choice. You drive it with a standard ring or open-end spanner, so you can rethread bolts, studs and rods even where a die stock won’t fit. Made from durable HSS, it delivers clean, repeatable results across everyday workshop and maintenance tasks. For a quick demo, watch our how-to video.

Applications & Benefits

Rethreading and thread repair for damaged external threads (bolts, studs, rods)
Hex body for use with a spanner—ideal in confined or awkward locations
HSS construction for toughness and reduced chipping
Efficient chip spaces between cutting edges for smooth swarf evacuation
BSF thread profile to match British Standard Fine fasteners

See it in action: YouTube tutorial.

Step-by-Step Guide

Clean & lubricate: remove dirt and rust; apply cutting oil or paste.
Align square: start the die nut straight on the damaged thread to avoid cross-threading.
Drive with a spanner: turn evenly; don’t force.
Break chips: advance 1–2 turns, back off slightly to clear swarf; re-lubricate as needed.
Finish & check: back off, wipe clean and test with a matching BSF nut or gauge.

Quick video walkthrough: How to use a hex die nut.

Technical Specifications

Standard	DIN 382
Thread	BSF (British Standard Fine)
Material	High Speed Steel (HSS)
Use	External thread repair / rethreading
Typical materials	Structural, carbon & free-cutting steels; case-hardening & unalloyed QT steels ≤ ~750 N/mm²; steel castings; zinc alloys; copper, bronze; selected plastics (POM, PVC)
Accessibility	Operable with a spanner in tight or hard-to-reach locations

FAQ

Can I use it without a die holder?
Yes—drive it directly with a ring or open-end spanner on the hex body.

Will it cut a new thread?
It’s primarily for rethreading/repair. For cutting new threads from scratch, use a round adjustable die in a die stock.

What lubricant should I use?
Use quality cutting oil or paste appropriate for the base material to improve finish and tool life.

How do I avoid cross-threading?
Start square, use gentle pressure, and feel for proper lead engagement. If it binds, back off and realign.

Is HSS right for general maintenance?
Yes—HSS offers good toughness and reduced brittleness, making it a solid choice for day-to-day repair work.

Want advice on thread repair or choosing the right thread die for your job? Reach out via our contact form.

Additional information

Type of thread	British Standard Fine Thread
Standard	DIN 382
Material	HSS
Tolerance	medium
Size	BSF 3/8 x 20
Width across flat	27 mm
EAN	4022835225188
Item number	22518
Thread standard	BS 84
Rec. Bolt diameter	9.39 mm