Engineering Data Sheets
Fastener Data Sheets& CAD
Browse ISO, DIN, ASTM and ASME fastener standards with dimensional specifications, CAD blueprints, drilling & clearance data, chemical composition and mechanical properties.
Reference: DIN 965 / ISO 7046
Fastener Catalog & Standard Specification
Active: DIN 965 / ISO 7046 (Countersunk Machine Screw (Phillips))
Select a fastener below to view its data sheet
DIN 965 / ISO 7046DIN STANDARDFull ThreadMetric Coarse
Countersunk Flat Head Cross Recessed Screws
Flat countersunk 90° head machine screw with cross recess for flush mounting in pre-countersunk holes.
CAD Schematic
Nominal blueprint for M4
Engineering Schematic / CAD Dimension InspectorModel: M4 × 50mm
Nominal Thread (d)M4 P=0.7mm
Wrench / Allen (s)mm e=
Tap Drill DiameterØ 3.3 mm
Tensile Stress Area (Aₛ)8.78 mm²
Manufacturing & Drilling Engineering Notes
- • Total length L is measured from the top surface of the head to the tip of the point (overall length).
- • Standard 90° countersink angle.
Size Specification Inspector
M4Select diameter & order quantity
Select Nominal Thread Diameter
Thread Pitch0.7 mm
Wrench (A/F Spanner s)N/A
Recommended Tap DrillØ 3.3 mm
Clearance Hole (H13)Ø 4.5 mm
Tensile Stress Area (Aₛ)8.78 mm²
Single unit weight (steel): 0.0056 kg
Chemical Composition & Metallurgy
Elemental mass percentages, grain structure & mechanical properties
Elemental Composition (Mass %)
CCarbon0.25 - 0.55%
MnManganese0.60 - 1.20%
PPhosphorus0.025% max
SSulfur0.025% max
SiSilicon0.15 - 0.35%
CrChromium0.20 - 0.50% (Optional)
BBoron0.0008 - 0.005% (Boron-treated)
FeIronBalance (~97.5%)
Mechanical Strength & Heat Treatment
Metallurgical Notes
- • Quenched and tempered at min 425°C to achieve fine tempered martensite microstructure.
- • Meets ISO 898-1 / ASTM F568M Class 8.8 specifications.
- • Boron-alloyed steels must contain min 0.0008% active Boron for hardenability.
Dimensional Specification
Thread / Pitch / Across Flats / Corners / Height / Drill / Clearance / Stress Area (mm)
| Thread (d) | Pitch | A/F (s) | Corners (e) | Height | Tap Drill | Clear H13 | Stress Area | |
|---|---|---|---|---|---|---|---|---|
| M2 | 0.4 | — | — | 1.2 | 1.6 | 2.4 | 2.07 | |
| M2.5 | 0.45 | — | — | 1.5 | 2.05 | 2.9 | 3.39 | |
| M3 | 0.5 | — | — | 1.65 | 2.5 | 3.4 | 5.03 | |
| M4 | 0.7 | — | — | 2.2 | 3.3 | 4.5 | 8.78 | |
| M5 | 0.8 | — | — | 2.5 | 4.2 | 5.5 | 14.2 | |
| M6 | 1 | — | — | 3 | 5 | 6.6 | 20.1 | |
| M8 | 1.25 | — | — | 4 | 6.8 | 9 | 36.6 | |
| M10 | 1.5 | — | — | 5 | 8.5 | 11 | 58 |