PCB surface-mount standoff/nut screw size
M1.6 · length not stated in the sources
The screws used on PCB surface-mount standoff/nut are M1.6. None of the sources we found gives an exact length, so measure the original before you order.
Where it is used: reelFast microPEM SMTSO-M1.6-1ET surface mount standoff, thread M1.6 x 0.35, for compact electronic assemblies.
This entry is marked confirmed and comes from pemnet.com.
For reference, M1.6 is 1.6 mm across the threads at 0.35 mm pitch. The imperial size people confuse it with: #1-72 UNF (1.85 mm) is larger; there is no true imperial equivalent.
PCB surface-mount standoff/nut 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.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M1.6 | not stated | 0.35 mm | not stated | not stated | ReelFast microPEM SMTSO-M1.6-1ET surface mount standoff, thread M1.6 x 0.35, for compact electronic assemblies | Confirmed |
Fitment records and sources
ReelFast microPEM SMTSO-M1.6-1ET surface mount standoff, thread M1.6 x 0.35, for compact electronic assemblies
pitch 0.35 mm · tap 1.25 mm · clearance 1.8 mm · PH00 / Torx T4–T5
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 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.
- 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.
- 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 M1.6 heads take PH00 for Phillips and T4–T5 for Torx, and a 1.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- 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.
More in Electronics, Racks & Enclosures
The same screw also fits
Devices whose records share a thread with PCB surface-mount standoff/nut, closest length match first.
- PCB self-clinching micro standoff also M1.6
- Dell XPS 15 also M1.6
- Arduino / PCB standoffs also M1.6
- Dell XPS 15 L521X also M1.6
- PEM microPEM SMTSO surface-mount standoff also M1.6
- HP EliteBook x360 830 G6 also M1.6
- Dell Inspiron 16 5625 also M1.6
- Dell Precision 5690 also M1.6
Questions about PCB surface-mount standoff/nut screws
- What size screw does PCB surface-mount standoff/nut use?
- M1.6 for reelFast microPEM SMTSO-M1.6-1ET surface mount standoff, thread M1.6 x 0.35, for compact electronic assemblies.
- How long are the screws in PCB surface-mount standoff/nut?
- 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 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 PCB surface-mount standoff/nut?
- The sources do not name the drive. For M1.6, Phillips heads normally take PH00 and Torx heads T4–T5; socket heads take 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.