M4 x 20mm T20 Torx Countersunk Screws (ISO 14581) - Thread Locking Stainless Steel (A2) Description
The M4 x 20mm T20 Torx Countersunk Screws (ISO 14581) - Thread Locking Stainless Steel (A2) has the following features:
M4 (4mm) Thread Size (T)
ISO 14581 Manufacturing Standard
20mm Length (L)
T20 Torx Size
Stainless Steel (A2) Material
Stainless Steel (A2) Material Specification
0.7mm Screw Thread Pitch
Thread Locking Finish
Metric Metric or Imperial?
8.4mm Head Diameter (D)
2.7mm Countersunk Length (H)
2.2mm Drive Depth (P)
+0/-0.36mm Head Diameter (D) Tolerance
90 degrees (+2/-0) Countersunk Angle (CA)
Discover more about the Metric Torx Countersunk Screws range
Torx Countersunk Screws feature a hexalobular Torx drive, also known as Star and 6lobe, which prevents cam-out, even under high-torque operation. Torx screws are commonly used for their ability to effectively transmit torque.
Countersunk screws, sometimes denoted by the abbreviation 'CSK', feature an angled countersunk head, which is designed to fit within a countersink. Countersunk screws are designed for use alongside pre-drilled countersunk holes, and are designed to sit flush with the target housing. ‘Countersunk’ is commonly abbreviated to ‘CSK’ in many part numbers and product descriptions.
Torx Countersunk Screw Kits
Accu's Torx Countersunk Screw Kits, available in A2 and A4 Marine Grade Stainless Steel, comprise of 720 high quality stainless screws, nuts and washers for the ultimate fastener kit experience. With the 2 screw kit sizes - Micro (M2, M2.5 & M3) and Small (M4, M5 & M6) Metric Thread Sizes to choose from - engineers can maintain an inventory of stainless steel fasteners and always be ready for their next project.
Torx Countersunk Captive Screws
Accu's range of Torx Counterunk Captive Screws combine a high performance torx drive with countersunk head and unthreaded shank for screw retaining purposes within machinery under the EU safety directive 2006/42/EC.
Torx Countersunk Screws are available in a number of materials, including Stainless Steel, Aluminium, Brass, Phosphor Bronze and PEEK. Chemical Blackening and Thread Locking Patches are also available on all Stainless Steel components within this range. Accu’s Torx Countersunk Screws are precision rolled to achieve extremely high accuracy, and can be manufactured to a tolerance of ±0.13mm.
Security Torx Countersunk Screws
Torx Countersunk Screws are also available with a tamper-proof security pin drive. The security variant of this product can be found in Accu's Security Torx Countersunk Screws range.
Metric Torx Countersunk Screws
Accu's Metric Hexalobular Countersunk Screws are manufactured to DIN standard 965. These components are available in thread sizes from M1.6 to M8, and lengths of between 2.00mm and 80.00mm.
Imperial Torx Countersunk Screws
Imperial Hexalobular Countersunk Screws are available in thread sizes from #4 to ¼ inch, and are available in lengths from ¼ inch up to ¾ inch.