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EM-Tec SEM sample holder screw set screw size

M1.6 · 4 to 6 mm long

If you are replacing a screw on EM-Tec SEM sample holder screw set, the thread is M1.6 in lengths from 4 to 6 mm.

The record covers M1.6 x 4mm and M1.6 x 6mm socket cap screws for electron-microscope stage inserts.

Head and drive, as the source states them: socket cap head and Hex socket (Allen) drive.

This entry is marked confirmed and comes from microtonano.eu.

M1.6 means a 1.6 mm nominal diameter with a 0.35 mm thread pitch. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.

EM-Tec SEM sample holder screw set 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
M1.64–6 mm0.35 mmSocket capHex socket (Allen)M1.6 x 4mm and M1.6 x 6mm socket cap screws for electron-microscope stage insertsConfirmed

Fitment records and sources

M1.64-6mmconfirmed

M1.6 x 4mm and M1.6 x 6mm socket cap screws for electron-microscope stage inserts

pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5

How to check the screw before you buy

  1. Camera and optics hardware often uses short screws into thin threaded plates, so check engagement before tightening fully.
  2. Diameter: across the threads an M1.6 screw measures about 1.6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
  3. Pitch: 0.35 mm from one thread crest to the next (28.57 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
  4. Length: for socket cap screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
  5. The records span 4–6 mm, which means different positions take different lengths — match each hole to its own screw.
  6. Driver: the source names a Hex socket (Allen) drive. For comparison, standard M1.6 heads take PH00 (Phillips) or T4–T5 (Torx), or a 1.5 mm hex key.
  7. Tightening: no device-specific torque is published in these records. The site's general figure for M1.6 is about 12-20 N·cm into metal threads and 6-10 N·cm into plastic bosses; snug it up and stop.

Pitch gauge · Screw size finder · Torque guide

Buy these screws at TechSpare Warehouse

In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.

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The same screw also fits

Devices whose records share a thread with EM-Tec SEM sample holder screw set, closest length match first.

Questions about EM-Tec SEM sample holder screw set screws

What size screw does EM-Tec SEM sample holder screw set use?
M1.6 × 4–6 mm for M1.6 x 4mm and M1.6 x 6mm socket cap screws for electron-microscope stage inserts.
How long are the screws in EM-Tec SEM sample holder screw set?
The records range from 4 to 6 mm depending on the position, so match each screw to its own hole.
What is the thread pitch of an M1.6 screw?
0.35 mm (coarse), which is the standard pitch for M1.6 machine screws; a 0.2 mm fine pitch exists but is uncommon. The tap drill is 1.25 mm and the normal clearance hole is 1.8 mm.
What screwdriver do I need for EM-Tec SEM sample holder screw set?
The source lists a Hex socket (Allen) drive. Standard M1.6 heads otherwise take PH00 (Phillips) or T4–T5 (Torx), or a 1.5 mm hex key.
Can I use an imperial screw instead of M1.6?
No. Imperial look-alike: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent. Use a true M1.6 screw so it does not cross-thread or strip the hole.
Where can I buy replacement screws for EM-Tec SEM sample holder screw set?
TechSpareWarehouse (our own store) lists M1.6 x 4mm, which matches the length in the records above.