M1.6 PEEK Engineering Plastic Micro Countersunk Screws dimensions to Trade series (PEEK micro screws): head diameter 2.3 mm, coarse thread pitch 0.35 mm, clearance hole (ISO 273 medium) 1.8 mm, tapping drill 1.25 mm. Tighten to approximately 0.2 Nm at property class 8.8 in a dry, as-supplied condition.
- Head diameter
- 2.3 mm
- Coarse thread pitch
- 0.35 mm
- Clearance hole (ISO 273 medium)
- 1.8 mm
- Tapping drill
- 1.25 mm
- Tightening torque (class 8.8)
- 0.2 Nm
Figures are nominal values from the governing standard. Confirm against the tolerance class for your application before machining or ordering.
The M1.6 size of PEEK Engineering Plastic Micro Countersunk Screws is dimensioned by Trade series (PEEK micro screws). The tables below give the dimensional row from the standard, the drill and spanner sizes that go with it, and the assembly torque per property class. The technical drawing on this page redraws to the exact values selected.
M1.6 Dimensional Row (Trade series (PEEK micro screws))
| Thread size | Example length (mm) | Head diameter (mm) | Drive | Material | Example tensile break load (N) | Example torsional break torque (Nu00b7m) |
|---|
| M1.6 | | 2.3 | cross recess No. 0 | PEEK engineering plastic | | |
Spanner & Drive for M1.6 PEEK Engineering Plastic Micro Countersunk Screws
Drive geometry for M1.6 PEEK Engineering Plastic Micro Countersunk Screws is given by the row above; match the tool to the listed values.
Hole Sizes for M1.6
| Coarse-thread pitch (ISO 724) | 0.35 mm |
|---|
| Through-hole / clearance (ISO 273 medium) | 1.8 mm |
|---|
| Tapping drill, coarse thread | 1.25 mm |
|---|
Tightening Torque for M1.6
| Class 8.8 (dry, ~µ 0.125) | ≈ 0.2 Nm |
|---|
| Class 10.9 (dry, ~µ 0.125) | ≈ Nm |
|---|
| Class 12.9 (dry, ~µ 0.125) | ≈ 0.3 Nm |
|---|
Indicative dry-joint values. Lubrication can lower the required torque by 15–25%. Always confirm against the joint design, especially when going up a strength class.
Proof Load & Strength for M1.6
| Tensile stress area As (ISO 724) | 1.3 mm² |
|---|
| Proof load, class 8.8 | 0.7 kN |
|---|
| Proof load, class 12.9 | 1.2 kN |
|---|
| Min. ultimate tensile load, class 8.8 | 1 kN |
|---|
Proof load = tensile stress area × the proof stress Sp of the class, per ISO 898-1 — Sp is a lower figure than the yield stress Rp0.2 and the two are not interchangeable. The stress area is computed from this size's own diameter and pitch, so a fine-pitch designation gives the fine-pitch figure. Design the joint so the working preload stays below the proof load of the class selected.
Installation Tips for M1.6 PEEK Engineering Plastic Micro Countersunk Screws
- At M1.6 the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
Mating Parts for M1.6
For M1.6, pair with a M1.6 hex nut (ISO 4032 / DIN 934) and, where used, a M1.6 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.
Custom manufacturing · Made to drawing
Need PEEK engineering plastic micro countersunk screws in a size this table does not list?
This page covers M1.6 PEEK engineering plastic micro countersunk screws. Head form and drive can be specified to the assembly rather than to a standard: a larger bearing face, a security drive, or a socket sized for the tool already on the bench. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
Custom screw manufacturingSend a drawing
Applications & Industries for M1.6 PEEK Engineering Plastic Micro Countersunk Screws
PEEK Engineering Plastic Micro Countersunk Screws are bought for a small number of well-defined jobs. These are the ones we ship them for. Stocked from M1.2 to M1.6.
Industries that specify PEEK Engineering Plastic Micro Countersunk Screws
-
Prototype assemblies
Countersunk plastic screws avoid a metal head near the component.
-
Insulated electronics
Engineering-plastic screws provide a nonconductive threaded joint in a compact package.
-
Vacuum and analytical equipment
Low-outgassing plastic is used around sensitive instruments.
-
Chemical equipment
PEEK resists service environments where ordinary metal hardware may be unsuitable.
-
Automotive & transport
Chassis, driveline and body fixings that see vibration and are assembled to a controlled preload.
-
Steel fabrication
Bolted connections in frames, enclosures, walkways and weldments, on the bench and on site.
Typical applications
- using the 90-degree head seat and No. 0 recess
- providing electrical insulation with a miniature countersunk screw
- checking the documented break loads instead of borrowing metal-screw torque
- matching the plastic screw to the parent thread without over-driving it
- joints where the property class is stated on the drawing
- clamping two machined faces to a calculated preload
Service conditions to specify against
- Marine and coastal
- Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
- High load
- Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
- Torque and preload
- The joint is designed around bolt tension, so lubrication, coating and the friction coefficient all change the torque figure — state them together.
Where to use something else
- Do not substitute metal-fastener torque for the plastic break-torque example; over-driving can fracture the screw.
- Do not use a machine thread into unthreaded sheet or timber; use a tapping screw, rivet nut or insert made for that parent material.
Full application guide: where PEEK Engineering Plastic Micro Countersunk Screws are used, how to specify them, and the cases they are wrong for
