M4 Slotted Knurled Thumb Screws, High Type dimensions to DIN 465: coarse thread pitch 0.7 mm, clearance hole (ISO 273 medium) 4.5 mm, tapping drill 3.3 mm.
- Coarse thread pitch
- 0.7 mm
- Clearance hole (ISO 273 medium)
- 4.5 mm
- Tapping drill
- 3.3 mm
Figures are nominal values from the governing standard. Confirm against the tolerance class for your application before machining or ordering.
M4 Slotted Knurled Thumb Screws, High Type are manufactured to DIN 465. This page lists the controlling dimensions for the M4 size together with the installation notes for this type.
Values are taken from the governing standard rather than from a general machine-thread table, because this type is not selected on one.
M4 Dimensional Row (DIN 465)
| Size | b (mm) | c (mm) | Head diameter dk (mm) | dk_max (mm) | dk_min (mm) | ds_nom_max (mm) | ds_min (mm) | h_nom (mm) | h_max (mm) | h_min (mm) | Head height k (mm) | k_min (mm) | n_nom (mm) | n_min (mm) | n_max (mm) | r (mm) | t_min (mm) | t_max (mm) | x (mm) | Knurling | Length range l (mm) | Reference standard |
|---|
| M4 | 12 | 0.4 | 16 | 16.35 | 15.65 | 8 | 7.64 | 9.5 | 9.79 | 9.21 | 3.5 | 3.2 | 1 | 1.06 | 1.2 | 0.5 | 2.2 | 2.7 | 1.75 | 0.6 | 5~18 | DIN 465 |
Hole Sizes for M4
| Coarse-thread pitch (ISO 724) | 0.7 mm |
|---|
| Through-hole / clearance (ISO 273 medium) | 4.5 mm |
|---|
| Tapping drill, coarse thread | 3.3 mm |
|---|
Mating Parts for M4
For M4, pair with a M4 hex nut (ISO 4032 / DIN 934) and, where used, a M4 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.
Custom manufacturing · Made to drawing
Need slotted knurled thumb screws, high type in a size this table does not list?
This page covers M4 slotted knurled thumb screws, high type. Dimensions, material, finish and form are specified from the drawing — a screw outside the standard range is a variation on existing tooling rather than a new design. 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 M4 Slotted Knurled Thumb Screws
What Slotted Knurled Thumb Screws are specified for, industry by industry. Stocked from M1 to M10.
Industries that specify Slotted Knurled Thumb Screws
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Optical mounts
fine positional adjustment.
-
Machine guards
access panels opened without tools.
-
Laboratory equipment
stands and clamps adjusted by hand.
-
Test fixtures
quick-change plates and stops.
-
Laboratory & test equipment
Panels and clamps adjusted by hand during a run.
-
Machine guarding
Covers and guards opened by an operator without a tool.
Typical applications
- bearing the collar on the part instead of the thread
- repeated opening without tool wear
- adjusting and locking by hand
- finishing tightening with a screwdriver in the slot
- tool-free opening and closing of a panel or clamp
- adjustment that has to be made by hand while the machine runs
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.
Where to use something else
- Do not rely on finger tightening where vibration is present; use the slot to set a real torque or add a lock.
- Not for a joint that needs a defined clamp load; a hand-tightened screw carries only what a hand can produce.
Full application guide: where Slotted Knurled Thumb Screws are used, how to specify them, and the cases they are wrong for
