What does the "A" (Aviation) designation mean for this bit?

A stands for aviation. This extra-hard bit features a sharp-edged profile designed to penetrate paint inside screw heads for reliable grip.

What drive size and profile does this bit have?

It features a 1/4" hexagon drive, a PH 2 (Phillips) tip, and an overall length of 152 mm.

Which bit holders and machines are compatible with this bit?

The 1/4" hex shank fits standard machines and bit holders conforming to DIN ISO 1173-F 6.3 (Wera connecting series 4).

Is this bit VDE certified for live electrical work?

No, this bit is not VDE certified and is not insulated for work on live electrical components.

WERA 851/4 A PH bit Phillips, PH 2 x 152 mm - 05134911001

Name: WERA 851/4 A PH bit Phillips, PH 2 x 152 mm - 05134911001
Brand: WERA
SKU: 02818496
Price: 12.78 EUR
Availability: PreOrder

Supplier number: WERA 05134911001 | EAN 4013288105219

12.78 tax incl.

€10.56 excl. VAT (incl. all environmental contributions)

On order: delivered from 29/10/2026

The minimum purchase order quantity for the product is 10.

Delivery by DHL

✆ Talk to a specialist

Secure torque transfer on painted fasteners

Practical benefits

Sharp edges penetrate paint: The sharp-edged profile cuts through paint in the screw head so you maintain a dependable and slip-free connection.
Extra-hard Wera construction: You achieve maximum wear resistance when fastening into semi-hard materials thanks to the specifically hardened design.
Extended reach for recesses: With an overall length of 152 mm and a 1/4" hex drive, you access deeply set screws with ease.

In a nutshell

The right choise for

With the Wera 851/4 a ph bit, you easily drive Phillips screws even when recesses are clogged with paint or coatings. Its sharp-edged Aviation profile penetrates paint build-up to deliver a dependable grip and prevent cam-out. The extra-hard design ensures excellent wear resistance during tough fastening jobs in semi-hard materials. With an extended length of 152 mm, you reach deep-set fasteners effortlessly without bulky extension holders. The 1/4" hexagon drive fits directly into bit holders and power tools conforming to din iso 1173-F 6.3.

Product information FAQ

€12.78

tax incl.

Key features according to our expert

Length: 152 mm
Blade thickness: Not applicable
Type of drive profile (bit): Phillips
Connection size (bit): 1/4"
VDE approved: No
Bit profile: PH2
Drive profile size (bit): 2

Scope of delivery

851/4 A bits, PH 2 x 152 x 6 mm

Product description

High quality Wera bit for Phillips screws. It has a sharp-edged profile that ensures a dependable transfer of power between the bit and screw by breaking off the paint e.g. when screw profiles are covered in it. Extra-hard design: 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

For Phillips screws
Profiled version
Particularly hard for semi-hard materials
1/4" hexagon drive (Wera connecting series 4)

Application

Phillips screws

Drive

1/4" hexagon, suitable for DIN ISO 1173-F 6.3 bit holders

Design

Extra-hard, profiled version

Features and benefits

A stands for aviation. A bits are particularly hard bits with a sharp-edged profile which e.g. penetrates screw profiles full of paint (such as on fuselage panels) ensuring a dependable transfer of force between the bit and the screw.

All Features

Length: 152 mm
Blade thickness: Not applicable
Type of drive profile (bit): Phillips
Connection size (bit): 1/4"
Vde approved: No
Bit profile: PH2
Drive profile size (bit): 2
Tip size: PH 2

Brand WERA
02818496
EAN 4013288105219
Supplier number WERA 05134911001

Frequently asked questions about this product

Answered by specialists

What does the "A" (Aviation) designation mean for this bit?: A stands for aviation. This extra-hard bit features a sharp-edged profile designed to penetrate paint inside screw heads for reliable grip.
What drive size and profile does this bit have?: It features a 1/4" hexagon drive, a PH 2 (Phillips) tip, and an overall length of 152 mm.
Which bit holders and machines are compatible with this bit?: The 1/4" hex shank fits standard machines and bit holders conforming to DIN ISO 1173-F 6.3 (Wera connecting series 4).
Is this bit VDE certified for live electrical work?: No, this bit is not VDE certified and is not insulated for work on live electrical components.

Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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