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Pepperl+Fuchs ML100 photoelectric sensors screw size

M3 · length not stated in the sources

The screws used on Pepperl+Fuchs ML100 photoelectric sensors are M3. None of the sources we found gives an exact length, so measure the original before you order.

Where it is used: metal threaded mounting holes in sensor body.

This entry is marked confirmed and comes from pepperl-fuchs.com.

For reference, M3 is 3 mm across the threads at 0.5 mm pitch. The imperial size people confuse it with: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.

Pepperl+Fuchs ML100 photoelectric sensors screw specifications

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

ThreadLengthPitchHeadDriveWhere it goesStatus
M3not stated0.5 mmnot statednot statedmetal threaded mounting holes in sensor bodyConfirmed

Fitment records and sources

M3not statedconfirmed

metal threaded mounting holes in sensor body

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

How to check the screw before you buy

  1. Industrial parts lists usually give the full callout (thread, length, head, grade); match all four, not just the thread.
  2. Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
  3. Pitch: 0.5 mm from one thread crest to the next (20 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. Driver: the source does not name the drive. Standard M3 heads take PH1 for Phillips and T10 for Torx, and a 2.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
  6. Tightening: no device-specific torque is published in these records. The site's general figure for M3 is about 80-130 N·cm into metal threads and 35-60 N·cm into plastic bosses; snug it up and stop.

Common mix-ups with M3

  • Many gas-detector and sensor manuals only give a torque spec (e.g. '0.5 N·m max') without repeating the thread size at every mention — the explicit M3 callout is usually only in the accessories/spare-parts table, not the main installation steps.
  • GoPro's own official Dive Housing user guide does not itself state a metric screw size for the housing body; only third-party accessory manufacturer (INON) manuals explicitly cite M6 screws for their add-on arms/adapters attaching to the housing.

Pitch gauge · Screw size finder · Torque guide

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The same screw also fits

Devices whose records share a thread with Pepperl+Fuchs ML100 photoelectric sensors, closest length match first.

Questions about Pepperl+Fuchs ML100 photoelectric sensors screws

What size screw does Pepperl+Fuchs ML100 photoelectric sensors use?
M3 for metal threaded mounting holes in sensor body.
How long are the screws in Pepperl+Fuchs ML100 photoelectric sensors?
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 M3 screw?
0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.
What screwdriver do I need for Pepperl+Fuchs ML100 photoelectric sensors?
The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take a 2.5 mm hex key.
Can I use an imperial screw instead of M3?
No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.