S-94128A109 M4 DIN 927 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability - Alloy steel construction with Rockwell B75 hardness provides superior resistance to wear and deformation in demanding industrial environments.
• Precise Alignment - The 5.5mm shoulder diameter with tight tolerance ensures accurate component positioning and reduces assembly misalignment issues.
• Reliable Fastening - Class 6g thread fit with M4 x 0.7mm coarse pitch offers secure, vibration-resistant connections for high-stress applications.
• Space-Saving Design - Headless slotted configuration allows for flush mounting in confined spaces while maintaining easy installation and removal.
• Standardized Compatibility - DIN 927 certification guarantees interchangeability and consistent performance across metric fastener systems.
• Environmental Compliance - Meets RoHS 3 and REACH regulations, ensuring safe use in regulated industries and international markets.
• Optimized Shoulder Length - 8mm shoulder with controlled tolerance provides stable bearing surface for rotating components and pivoting mechanisms.

Professional Applications & Engineering Value

These precision shoulder screws solve critical alignment challenges in mechanical assemblies where component positioning is paramount. The alloy steel construction with Rockwell B75 hardness withstands repetitive loads in automation equipment, while the precise shoulder diameter of 5.5mm acts as a reliable datum for rotating parts in conveyor systems and precision instruments. The headless slotted design enables flush installation in tight spaces common in electronic enclosures and machinery guards. With Class 6g thread fit and coarse pitch threading, these metric shoulder screws provide rapid assembly and disassembly in maintenance-intensive applications, reducing downtime in production environments. The DIN 927 certification ensures consistent quality across batch productions, making them ideal for OEM manufacturing and MRO operations.

Specification Summary & Compliance

This M4 shoulder screw features Class 6g thread fit with 0.7mm coarse pitch and right-hand threading. The shoulder maintains precise dimensions with 5.5mm diameter (-0.03mm to 0mm tolerance) and 8mm length (-0.58mm to 0mm tolerance). Manufactured to DIN 927 specifications using alloy steel heat-treated to Rockwell B75 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.