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Accessory guide

Screwdriver Bits, Nutsetters and Sockets

For a screw with an internal recess, choose the exact bit type and size. For an exposed hex head or nut, choose a nutsetter or socket by key width, then by the tool connection. Finally check impact suitability and access.

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This guide covers Bosch accessory choices for Bosch tools. Confirm the exact tool and accessory requirements before buying.

A simplified screwdriver bit beside enlarged PH, PZ and six-lobed T tip-family symbols.
Bit · PH · PZ · TIllustration for reference only. Not an image of the branded product.Selected screwdriver-tip families are shown. The wider family also includes holders, nutsetters and sockets. Match exact type and size; these symbols are not fit gauges or impact-duty markings.

Start with what you need to turn

A screw with a recess

Choose a screwdriver bit for the shaped recess inside the screw head. Slotted, Phillips, Pozidriv, Torx and hex-socket screws need their corresponding bit type. A hex-socket screw has the driving recess inside its head; a nutsetter is for a head or nut gripped around the outside.

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An exposed hex head or nut

Choose a nutsetter or socket with the required key width: the size across the fastener’s opposite flat sides. Then choose the connection for your tool. Bosch’s PRO Impact Nutsetter uses a hex shank; its PRO Impact Socket Set is for square-drive impact wrenches. The fastener size and the tool connection are separate choices.

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Match both parts of the bit code

PH means Phillips

PH2 identifies a Phillips bit in size 2. PZ means Pozidriv, so PZ2 is a different type even though it also carries the number 2. Match the letters and the size in the screw or assembly specification.

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T means Torx

Bosch labels its Torx bits with T codes, including T20 and T25. Keep the whole code when choosing a replacement; the number selects the size within that type.

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Example A Furniture fittings marked PZ2

Choose a PZ2 bit, then check the connection and permitted screwdriving setup for your Bosch tool. A PH2 bit is a different profile. The fitting’s PZ2 requirement decides the tip; the fact that you are fastening into wood does not change that requirement.

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Choose the connection and impact rating for your tool

Check the bit to tool connection

The shank is the end held by the tool or holder; a drill’s chuck is its clamp. Some setups hold the bit directly and others use a separate bit holder. If you need a holder, compare the bit-side opening with the bit shank, and the holder’s tool-side shank with your Bosch tool’s requirements. Bosch lists a holder’s shank and drive end separately.

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Using an impact driver

Choose a bit or nutsetter expressly listed for impact-driver use. Any holder or adapter in the setup must also be suitable for that tool and duty. Bosch explicitly lists its PRO Impact PH bits, nutsetter and bit holder for impact drivers; check the exact accessory rather than relying on its magnetic tip or hex shape.

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Using a square-drive impact wrench

Start with an impact socket in the correct drive size, then select its key width for the fastener. For example, Bosch’s PRO Impact Socket Set lists the square-drive size separately from the metric key widths. A socket that matches the nut still needs the right connection to the wrench.

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Example B A bracket with a 10 mm hex head

If the assembly permits powered fastening, choose a 10 mm nutsetter with the connection and duty required by your Bosch driver that accepts hex-shank accessories. For a square-drive Bosch impact wrench, choose a 10 mm impact socket with the wrench’s drive size. Both engage the outside of the head; the tool connection decides the format.

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Choose a length that lets you approach straight

Keep the tip code when access changes

For a recessed screw, compare bit length and the space occupied by any holder while keeping the required tip type and size. Bosch lists PH2 versions in 55 mm and 90 mm lengths. Those are length choices for the same PH2 tip.

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Example C Reaching a recessed PH2 screw

If a shorter setup brings the holder against the surrounding surface before the tip can sit straight in the screw, compare a longer PH2 bit. Check the complete fitted setup and available space before buying. The catalogue length alone does not guarantee usable reach, and tilting the bit to compensate can make it slip.

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Buy the sizes your jobs actually use

One repeated screw or several different jobs

For repeated work with one known screw code, look for that exact bit or a pack of it. For jobs calling for several codes, compare a set’s contents against your list. Bosch’s PRO Impact sets contain named PH, PZ and T sizes; a larger piece count does not by itself give you the missing size or the reach you need.

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Before you buy

1 Fastener

Write down the full recess code, such as PZ2 or T20, or the hex head’s key width. This determines the working end.

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2 Tool and connection

Check your exact Bosch tool, the accessory shank or socket drive, and both ends of any holder or adapter. Match each connection, not just the fastener size.

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3 Duty and access

For impact use, check every accessory in the setup for the stated impact duty. Compare length and clearance so the correct tip can engage straight.

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4 What is included

Read the exact set or pack contents: required codes, duplicates, and whether a holder or other connector is supplied. Buy for the missing pieces you need, rather than the headline count.

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Pro tips & practical checks

Do

Seat the correct bit straight

Use a tip that matches the screw and keep it aligned with the recess. If it starts slipping, stop and recheck before continuing.

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Use the fastening instructions

Follow the exact tool and assembly instructions for torque or depth control. Torque means turning force; a depth stop controls how far the screw is driven. Neither setting can be chosen from the bit code alone.

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Do not

Substitute a similar looking tip

Do not replace PZ2 with PH2 just because both look like cross-head bits. Return to the specified type and size.

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Treat a magnet or hex shank as an impact rating

Magnetism describes holding assistance, and the shank describes the connection. Look for an explicit impact-use statement on the exact bit, nutsetter, socket and any connector you intend to use.

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Common questions

Why does the bit keep slipping out of the screw?

Recheck size and alignment first. Bosch identifies a wrong-size bit, angled contact and tilting among the causes. Slipping can injure the user and damage the screw, bit or workpiece. If the correct tip still cannot engage properly, stop and resolve the cause.

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Can an impact bit also be used with a rotary drill or driver?

The cited Bosch PRO Impact PH bits and PRO Impact Bit Holder are listed for both impact drivers and rotary drills/drivers. For those products, check the connection required by your exact Bosch tool. Do not assume that another accessory has the same machine suitability just because its name is similar.

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Why can two eight piece sets cover different jobs?

Some pieces may be duplicates. Bosch’s two PRO Impact eight-piece options illustrate this: one repeats PH2 and PZ2, while the other includes PH1, PZ1 and T15. Compare the full code list with your jobs; identical counts do not mean identical coverage.

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Explore the Bosch India categories

Sources
  1. Bosch India Screwdriver Bits, Nutsetters and Sockets

    Main category body after H1: four child links;

  2. Bosch India Adapters and Bit Holders

    Main H1 and product cards for PRO Impact Bit Holder and Universal Holder Standard Magnetic

  3. Bosch India Screwdriver Bits

    Main H1 and type filters / product cards

  4. Bosch India Socket Wrenches

    Main H1; product cards including PRO Impact Nutsetter and Impact Control Socket

  5. Bosch India Screwdriver Bit Sets

    Main H1 and product cards

  6. Bosch India PRO Impact PH Screwdriver Bit

    Product heading and features, PRO Impact PH for Robust Screwdriving, lines 258–261; Product Options rows 2608522522 / 2608522524, lines 262–285

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  7. Bosch India PRO Impact PZ Screwdriver Bit

    PRO Impact PZ for Robust Screwdriving, exact variant title at line 246

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  8. Bosch India PRO Impact T Screwdriver Bit

    PRO Impact T for Robust Screwdriving, Product Options, lines 272–284

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  9. Bosch India PRO Impact Nutsetter

    Product heading/features, PRO Impact Nutsetter for Robust Fastening Screws, Nuts, and Bolts, lines 245–248; Product Options, lines 249–264

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  10. Bosch India PRO Impact Socket Set

    Heading: For impact wrenches / Designed for square drives, PRO Impact Socket Set for Robust Screwdriving, lines 247–249; Product Options lines 250–300; 1/4-inch Standard set details and Set description, lines 334–344

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  11. Bosch India PRO Impact Bit Holder

    Product heading/features, description lines 242–244; Product Options lines 245–258

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  12. Bosch India Universal Holder Standard Magnetic

    Heading/features, Product Options lines 254–273; Details lines 284–292

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  13. Bosch India PRO Impact Screwdriver Bit Set

    Heading/features, Product Options, lines 249–267; full variant titles, lines 272 and 284

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  14. Bosch DIY India screwdriving questions

    Questions and answers about Screwdriving: What is a bit?, How do you protect yourself against bits slipping off?, lines 211–223; How do you protect yourself against screwdriver recoil torques?, lines 231–234

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  15. Bosch GSB 600 instruction manual 1 609 92A 89B

    Printed p.5 (PDF p.5): General Power Tool Safety Warnings / Personal safety and Power tool use and care. Printed p.6: use according to instructions. Printed p.7: Screwdriving tools, only bits fitting the screw head.

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  16. Bosch India GSB 600 manual download

    Downloads > User Manual > Instruction manual | GSB 600 (PDF 5.2 MB); gsb600.links.json contains /binary/manualsmedia/o404744v21_160992A89B_202212.pdf