M4X0.5 Fine Adjustment Set Screws are manufactured to DIN 913 with a coarse thread pitch of 0.5 mm. This page lists the controlling dimensions for the M4X0.5 size — head geometry, width across flats, matching spanner size — together with the clearance hole, tapping drill and tightening torque used at assembly.
M4X0.5 Dimensional Row (DIN 913)
| Thread size | Pitch (mm) | Hex socket s (mm) | Travel per turn (mm) | Travel per 1/12 turn (mm) | Common length range (mm) | Reference standard |
|---|---|---|---|---|---|---|
| M4x0.5 | 0.5 | 2 | 0.50 | 0.042 | 4~20 | DIN 913 fine |
Spanner & Drive for M4X0.5 Fine Adjustment Set Screws
Drive geometry for M4X0.5 Fine Adjustment Set Screws is given by the row above; match the tool to the listed values.
Hole Sizes for M4X0.5
| Coarse-thread pitch (ISO 724) | 0.5 mm |
|---|---|
| Through-hole / clearance (ISO 273 medium) | 4.5 mm |
| Tapping drill, coarse thread | 3.5 mm |
Tightening Torque for M4X0.5
| Class 8.8 (dry, ~µ 0.125) | ≈ 3.3 Nm |
|---|---|
| Class 10.9 (dry, ~µ 0.125) | ≈ Nm |
| Class 12.9 (dry, ~µ 0.125) | ≈ 5.6 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 M4X0.5
Set screws are rated to ISO 898-5 by hardness, because they work in compression against a shaft rather than in tension. ISO 898-1 excludes them, and a set screw has no head to preload against, so neither a property class nor a preload torque applies. Seating torque depends on the point form and the shaft material.
M4X0.5 Fine Adjustment Set Screws Weight
A steel M4X0.5 fine adjustment set screws at the listed 420 mm length weighs approximately 4,247 g each — about 4,247 kg per 1,000 pieces. Stainless A2/A4 weighs roughly the same (density 7.9–8.0 g/cm³).
Actual weight varies slightly with head form, thread and finish; use this figure for freight estimation only.
Installation Tips for M4X0.5 Fine Adjustment Set Screws
- At M4X0.5 the stretch in the bolt becomes the controlling factor — for critical joints, use angle-controlled or stretch-controlled tightening instead of pure torque.
Mating Parts for M4X0.5
For M4X0.5, pair with a M4X0.5 hex nut (ISO 4032 / DIN 934) and, where used, a M4X0.5 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.
Custom manufacturing · Made to drawing
Need fine adjustment set screws in a size this table does not list?
This page covers M4X0.5 fine adjustment set screws. Where the standard stops, the drawing takes over: fine pitches, left-hand threads, partial threading, and property classes above the catalogued grade where material and heat treatment allow. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
