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![Screw Extractor → ENGINEER → DBZ-340 → 4 mm hex socket, 18 mm bit → JPEDBZ340 [1]](https://gomagcdn.ro/domains/sancogrup.ro/files/product/original/extractor-suruburi-uzate-engineer-dbz-330-bit-scurt-18-mm-priza-hexagonala-diametru-3-mm-copie-534653.jpg "Screw Extractor → ENGINEER → DBZ-340 → 4 mm hex socket, 18 mm bit → JPEDBZ340 [1]")
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ENGINEER Extractor for Damaged 4 mm Hex Socket Screws, 18 mm Short Bit, Made in Japan DBZ-340
Ultra-short extractor for damaged 4 mm hex sockets
- For screws with a damaged 4.0 mm hex socket.
- No hammering: press and turn to remove.
- Only 18 mm long for confined spaces.
- Standard 6.35 mm hex shank.
- Compatible with ENGINEER DR-27, DR-26 and DR-28.
PN: DBZ-340
Delivery date: Monday, 26.10.2026
Product Code:
JPEDBZ340
Do you need help?
0752.645.008
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- Description
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ENGINEER DBZ-340 is an ultra-short extractor bit for removing screws with a damaged 4.0 mm hex socket. Its specially designed tip bites firmly into the rounded socket and allows the screw to be removed without hammering, by applying pressure and turning in the loosening direction.
At only 18 mm overall length, DBZ-340 is designed for confined spaces. Its standard 6.35 mm hex shank fits compatible tools and accessories; ENGINEER recommends DR-27 for restricted spaces and DR-26 or DR-28 for difficult-to-reach areas.
DBZ-340 is sized for screws with a 4.0 mm across-flats hex socket. The 4 mm value refers to the screw socket, not the bit shank.
The newly designed tip bites into the damaged hex socket and allows removal by pressing and turning without a hammering operation.
Its 18 mm overall length provides access where a conventional longer extractor or bit is difficult to use.
It can be used with the DR-27 mini ratchet and attached to DR-26 or DR-28 bit holders/adapters for difficult-to-reach areas.
For screws whose 4 mm hex socket has been rounded or damaged and can no longer be driven normally with an Allen key.
The slim tip design also allows use on compatible hex socket set screws.
ENGINEER lists field repair, automotive, motorcycle, bicycle maintenance and DIY work, particularly in confined spaces.
DBZ-340 is intended for lightly damaged screws. Press the extractor firmly into the socket and turn in the loosening direction. ENGINEER notes that screws completely seized by rust or adhesive may not be removable. For other screw-head types, the manufacturer also describes a pilot-hole technique using the appropriate extractor size.
ENGINEER DBZ-340 is a short extractor bit for screws with a damaged 4.0 mm hex socket. Its specially shaped tip bites into the rounded socket and enables removal without hammering by pressing and turning. With an overall length of only 18 mm, it is suitable for confined spaces in automotive, motorcycle, bicycle and general maintenance work. The bit has a standard 6.35 mm hex shank, a 6 mm long tip with 5.5 mm diameter, weighs 4 g and is made from carbon steel. It can be used with ENGINEER DR-27 and connected to DR-26 or DR-28. It is intended for light damage; screws completely seized by rust or adhesive may require another method.
It is the across-flats size of the damaged hex socket in the screw. The bit shank is a separate 6.35 mm hex.
No. ENGINEER designed this model to remove damaged hex-socket screws without hammering, by pressing and turning.
No. ENGINEER describes it for light damage and notes that screws completely seized by rust or adhesive may not be removable.
At only 18 mm overall length, DBZ-340 is designed for confined spaces. Its standard 6.35 mm hex shank fits compatible tools and accessories; ENGINEER recommends DR-27 for restricted spaces and DR-26 or DR-28 for difficult-to-reach areas.
Main features
For damaged 4.0 mm hex sockets
DBZ-340 is sized for screws with a 4.0 mm across-flats hex socket. The 4 mm value refers to the screw socket, not the bit shank.
Removal without hammering
The newly designed tip bites into the damaged hex socket and allows removal by pressing and turning without a hammering operation.
Ultra-short bit for confined spaces
Its 18 mm overall length provides access where a conventional longer extractor or bit is difficult to use.
Compatible with ENGINEER accessories
It can be used with the DR-27 mini ratchet and attached to DR-26 or DR-28 bit holders/adapters for difficult-to-reach areas.
Technical specifications
- Manufacturer code: DBZ-340
- Sanco Grup code: JPEDBZ340
- Type: short extractor bit for damaged hex-socket screws
- Applicable screw socket: 4.0 mm across flats
- Bit shank: 6.35 mm hex
- Overall length: 18 mm
- Tip length: 6 mm
- Tip diameter: 5.5 mm
- Weight: 4 g
- Material: carbon steel
Recommended applications
Damaged hex-socket screws
For screws whose 4 mm hex socket has been rounded or damaged and can no longer be driven normally with an Allen key.
Hex socket set screws
The slim tip design also allows use on compatible hex socket set screws.
Repair and maintenance
ENGINEER lists field repair, automotive, motorcycle, bicycle maintenance and DIY work, particularly in confined spaces.
Usage note
DBZ-340 is intended for lightly damaged screws. Press the extractor firmly into the socket and turn in the loosening direction. ENGINEER notes that screws completely seized by rust or adhesive may not be removable. For other screw-head types, the manufacturer also describes a pilot-hole technique using the appropriate extractor size.
Advantages
- Dedicated to damaged 4.0 mm hex sockets.
- Removal without hammering.
- Ultra-short 18 mm overall length.
- Standard 6.35 mm hex shank.
- 6 mm tip length and 5.5 mm tip diameter.
- Low weight: 4 g.
- Compatible with DR-27, DR-26 and DR-28.
ENGINEER DBZ-340 is a short extractor bit for screws with a damaged 4.0 mm hex socket. Its specially shaped tip bites into the rounded socket and enables removal without hammering by pressing and turning. With an overall length of only 18 mm, it is suitable for confined spaces in automotive, motorcycle, bicycle and general maintenance work. The bit has a standard 6.35 mm hex shank, a 6 mm long tip with 5.5 mm diameter, weighs 4 g and is made from carbon steel. It can be used with ENGINEER DR-27 and connected to DR-26 or DR-28. It is intended for light damage; screws completely seized by rust or adhesive may require another method.
Frequently asked questions
What does the 4 mm size mean on DBZ-340?
It is the across-flats size of the damaged hex socket in the screw. The bit shank is a separate 6.35 mm hex.
Does DBZ-340 need to be hammered in?
No. ENGINEER designed this model to remove damaged hex-socket screws without hammering, by pressing and turning.
Can DBZ-340 remove every seized screw?
No. ENGINEER describes it for light damage and notes that screws completely seized by rust or adhesive may not be removable.Package Contents: 1 x Extractor suruburi uzate Engineer DBZ-340 bit scurt 18 mm priza hexagonala diametru 4 mm
Material: Otel carbon
Protection working under voltage: Nu
Produced: Made in Japan
Weight: 0.04 kg
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What is this product used for?
ENGINEER DBZ-340 extractor for damaged 4 mm Allen screws used in industrial maintenance, manufacturing and professional servicing.
Where is the product made?
The product is made in Japan.
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