How long are the screws in Festo DASP-M4-125-A sensor bracket?

None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).

What is the thread pitch of an M4 screw?

0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.

What screwdriver do I need for Festo DASP-M4-125-A sensor bracket?

The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.

Can I use an imperial screw instead of M4?

No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.

How tight should the M4 screw on Festo DASP-M4-125-A sensor bracket be?

The source gives 0.6-1 Nm for sensor bracket for tie-rod pneumatic cylinders, M4 interface, 0.6-1 Nm.

Festo DASP-M4-125-A sensor bracket screw size

M4 · length not stated in the sources

If you are replacing a screw on Festo DASP-M4-125-A sensor bracket, the thread is M4. None of the sources we found gives an exact length, so measure the original before you order.

The record covers sensor bracket for tie-rod pneumatic cylinders, M4 interface, 0.6-1 Nm.

This entry is marked confirmed and comes from static.chipdip.ru.

For reference, M4 is 4 mm across the threads at 0.7 mm pitch. The imperial size people confuse it with: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.

Festo DASP-M4-125-A sensor bracket screw specifications

One row per fitment record. Head, drive and torque are shown only where the source states them; pitch is the ISO coarse pitch for the thread.

Thread	Length	Pitch	Head	Drive	Torque	Where it goes	Status
M4	not stated	0.7 mm	not stated	not stated	0.6-1 Nm	Sensor bracket for tie-rod pneumatic cylinders, M4 interface, 0.6-1 Nm	Confirmed

Fitment records and sources

M4not statedconfirmed

Sensor bracket for tie-rod pneumatic cylinders, M4 interface, 0.6-1 Nm

pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20

Source

How to check the screw before you buy

Board standoffs and enclosure bosses set the usable length: the screw should clamp the board without bottoming in the standoff.
Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
Pitch: 0.7 mm from one thread crest to the next (14.29 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.

Common mix-ups with M4

Festo sensor brackets are named after the sensor interface (DASP-M4-...), but the bracket's own fixing screws are often a different size (M5/M6/M8).
On sensors, an "M4" or "M12" marking often describes the sensor barrel or connector thread, not the mounting screw - check which one the datasheet means.

Pitch gauge · Screw size finder · Torque guide

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The same screw also fits

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ETC Sensor+ Dimmer Rack (theatrical stage lighting dimmer rack, rigging control gear) also M4
Elo EMV bracket flat-head screw (Bag R) also M4
Keystone metric hex PCB standoff (M4) also M4

Questions about Festo DASP-M4-125-A sensor bracket screws

What size screw does Festo DASP-M4-125-A sensor bracket use?: M4 for sensor bracket for tie-rod pneumatic cylinders, M4 interface, 0.6-1 Nm.
How long are the screws in Festo DASP-M4-125-A sensor bracket?: None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).
What is the thread pitch of an M4 screw?: 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
What screwdriver do I need for Festo DASP-M4-125-A sensor bracket?: The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
Can I use an imperial screw instead of M4?: No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.
How tight should the M4 screw on Festo DASP-M4-125-A sensor bracket be?: The source gives 0.6-1 Nm for sensor bracket for tie-rod pneumatic cylinders, M4 interface, 0.6-1 Nm.

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