DIN963 Titanium Slotted Countersunk Head Screws Gr2 Gr5

DIN963 Key Information on Slotted Countersunk Head Screws

I. Standard Overview

• ‌Standard Name‌: Slotted Countersunk Head Screws. Current version is ‌DIN 963-1990‌, applicable to metric thread specifications.

• ‌International/Chinese Equivalents‌: Compatible with ‌ISO 2009‌; the Chinese equivalent standard is ‌GB/T 68‌ (Slotted Countersunk Head Screws).

II. Structural Design

1. ‌Head Design‌

• Countersunk head shape, allowing flush installation with the connected surface to minimize protrusion and improve safety.

• Slotted drive (single slot) requiring a flat-blade screwdriver for installation.

2. ‌Slot and Dimensions‌

• Slot width (n) and depth (t) vary with screw size (e.g., M5 screws have a maximum slot width of 0.8 mm).

• Countersunk head diameter (dk) corresponds to the nominal diameter (d), e.g., dk for M3 screws is nominally 5.6 mm.

III. Specifications & Parameters

1. ‌Size Range‌

• ‌Nominal Diameter‌: Covers ‌M1-M20‌, with non-preferred sizes such as M3.5 and M14.

• ‌Nominal Length (L)‌: Ranges from ‌2-100 mm‌; thread length correlates with L (e.g., M6 screws with L=10 mm have a thread length of ~8 mm).

2. ‌Typical Parameter Examples‌

   Size	d (Nominal Diameter)	P (Pitch)	dk (Head Diameter)	L (Length Range)
   M3	3mm	0.5mm	5.6mm	5-30mm
   M6	6mm	1.0mm	11.0mm	12-60mm
   M10	10mm	1.5mm	18.0mm	20-100mm
   Note: Data sourced from DIN 963-1990 standard tables.

IV. Materials & Surface Treatments

• ‌Materials‌: Carbon steel (strength grades 4.8/8.8), stainless steel (A2-70/A4-80), duplex steel, etc.

• ‌Surface Treatments‌: Plain, zinc-plated (blue/white, color, black), Dacromet, etc., for corrosion resistance.

V. Applications

• ‌Machinery Manufacturing‌: Precision equipment, motors, pumps, and valves requiring flush mounting.

• ‌Furniture Industry‌: Concealed fastening in wood panels and metal frames.

• ‌Automotive/Construction‌: Chassis components and structural steel connections.