Blind-tapped DN16CF ConFlat vacuum flange (metric) screw size
M4 · 25 mm long
Our records put Blind-tapped DN16CF ConFlat vacuum flange (metric) on M4 screws, 25 mm long.
The record covers stud set: seven M4 x 25 mm silver-plated stainless socket screws.
This entry is marked confirmed and comes from lesker.com.
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Blind-tapped DN16CF ConFlat vacuum flange (metric) 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 |
|---|---|---|---|---|---|---|
| M4 | 25 mm | 0.7 mm | not stated | not stated | Stud set: seven M4 x 25 mm silver-plated stainless socket screwsstainless | Confirmed |
Fitment records and sources
Stud set: seven M4 x 25 mm silver-plated stainless socket screws
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Keep material and finish the same as the original (often stainless) on equipment that is cleaned or sterilised.
- 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.
- The record states 25 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- 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.
- Tightening: no device-specific torque is published in these records. The site's general figure for M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4
- D-sub jackscrews come in both metric M3 and imperial 4-40 — identical looking, not interchangeable.
- There is no single standard Picatinny/rail screw size; makers use metric M3/M4 and imperial 6-48 or 8-40 interchangeably. Always measure the existing screw.
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.
More in Medical & Laboratory
The same screw also fits
Devices whose records share a thread with Blind-tapped DN16CF ConFlat vacuum flange (metric), closest length match first.
- Atdec Telehook TH-2250-VF display wall mount also M4 × 25 mm
- Meccano boxed sets (modern metric era) and compatible parts also M4 × 25 mm
- Panasonic TC-L65E60 also M4 × 25 mm
- Panasonic TC-L50E60 also M4 × 25 mm
- Heated bed leveling screws also M4 × 25 mm
- cab Applicator A3200 print-and-apply labeling system (packaging line hardware) also M4 × 25 mm
- goBILDA metric building system also M4 × 25 mm
- Martin MAC 500 moving head fixture also M4 × 25 mm
Questions about Blind-tapped DN16CF ConFlat vacuum flange (metric) screws
- What size screw does Blind-tapped DN16CF ConFlat vacuum flange (metric) use?
- M4 × 25 mm for stud set: seven M4 x 25 mm silver-plated stainless socket screws.
- How long are the screws in Blind-tapped DN16CF ConFlat vacuum flange (metric)?
- The record gives 25 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- 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 Blind-tapped DN16CF ConFlat vacuum flange (metric)?
- 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.