Eschmann LS5 / SES2555 autoclave screw size
M3 / M4 / M5 / M6 · 8 to 25 mm long
Eschmann LS5 / SES2555 autoclave takes M3, M4, M5 and M6 metric screws in lengths from 8 to 25 mm.
There are 6 separate fitment records for it, including pozi head screw PN 391087 (x2) (M3), cap head screw PN 710219 (superseded 10mm) (x4) (M4) and pozi head screw PN 307249 (x2) (M4), plus 3 more in the table below.
Head and drive, as the sources state them: flat / countersunk and socket cap heads and Pozidriv, Torx and Hex socket (Allen) drives.
6 of the 6 records are marked confirmed, drawn from 1 source (frankshospitalworkshop.com).
M3 means a 3 mm nominal diameter with a 0.5 mm thread pitch. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
Eschmann LS5 / SES2555 autoclave 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 |
|---|---|---|---|---|---|---|
| M3 | 8 mm | 0.5 mm | not stated | Pozidriv | Pozi head screw PN 391087 (x2) | Confirmed |
| M4 | 16 mm | 0.7 mm | not stated | not stated | cap head screw PN 710219 (superseded 10mm) (x4) | Confirmed |
| M4 | 8 mm | 0.7 mm | not stated | Pozidriv | Pozi head screw PN 307249 (x2) | Confirmed |
| M4 | 12 mm | 0.7 mm | Flat / countersunk | Torx | Torx pin countersunk screw PN 110953 (x2) | Confirmed |
| M5 | 20 mm | 0.8 mm | not stated | not stated | cap head screw PN 700237 | Confirmed |
| M6 | 25 mm | 1 mm | Socket cap | Hex socket (Allen) | socket cap head screw PN 710154 with retainer 306033 | Confirmed |
Fitment records and sources
Pozi head screw PN 391087 (x2)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
cap head screw PN 710219 (superseded 10mm) (x4)
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Pozi head screw PN 307249 (x2)
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
Torx pin countersunk screw PN 110953 (x2)
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
cap head screw PN 700237
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
socket cap head screw PN 710154 with retainer 306033
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- If several screws hold the same part, check that they are all the same length before assuming they are.
- Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). This device also uses M4 / M5 / M6, so measure each screw rather than assuming they match.
- 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.
- Length: the source describes a countersunk (flat) head, and those are measured overall, from the top of the head to the tip.
- The records span 8–25 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Pozidriv drive. For comparison, standard M3 heads take PH1 (Phillips) or T10 (Torx), or a 2.5 mm hex key.
- 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 / M4 / M5 / M6
- ISO 14581 Torx countersunk screws look like plain countersunk screws but need the right lobe driver; a Phillips bit will chew the head.
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
- M5x0.8 is the de facto universal bike thread — confirm 0.8mm pitch before threading into carbon or alloy bosses.
- TS-Optics Losmandy-style dovetail bars drill through-holes sized to accept either M6 metric screws or 1/4" imperial screws interchangeably in the same countersunk holes.
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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More in Other Equipment
The same screw also fits
Devices whose records share a thread with Eschmann LS5 / SES2555 autoclave, closest length match first.
- 2020 aluminium extrusion T-nuts also M3 × 8 mm
- Navien NCO series tankless water heater also M4 × 12 mm
- Kenwood TK-8302 transceiver also M3 × 8 mm
- European cup hinge mounting plate also M4 × 16 mm
- Arduino Uno / Mega also M3 × 8 mm
- Allen-Bradley PowerFlex 755 IP00 control pod also M4 × 12 mm
- Kern PFB precision balance internal hardware also M3 × 8 mm
- PSU internals & fan grilles also M3 × 8 mm
Questions about Eschmann LS5 / SES2555 autoclave screws
- What size screw does Eschmann LS5 / SES2555 autoclave use?
- M3 × 8 mm for pozi head screw PN 391087 (x2); M4 × 16 mm for cap head screw PN 710219 (superseded 10mm) (x4); M4 × 8 mm for pozi head screw PN 307249 (x2); M4 × 12 mm for torx pin countersunk screw PN 110953 (x2); M5 × 20 mm for cap head screw PN 700237; M6 × 25 mm for socket cap head screw PN 710154 with retainer 306033.
- How long are the screws in Eschmann LS5 / SES2555 autoclave?
- The records range from 8 to 25 mm depending on the position, so match each screw to its own hole.
- 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 Eschmann LS5 / SES2555 autoclave?
- The source lists a Pozidriv, Torx and Hex socket (Allen) drive. Standard M3 heads otherwise take PH1 (Phillips) or T10 (Torx), or 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.
- Where can I buy replacement screws for Eschmann LS5 / SES2555 autoclave?
- TechSpareWarehouse (our own store) lists M3 x 8mm, which matches the length in the records above.