USA SAE Flat Washer Thru Hardened with Plain Finish
USA-Made SAE Thru Hardened Flat Washers for High-Performance Fastening
When consistent load distribution and maximum strength are critical, USA-made SAE thru hardened flat washers with a plain finish deliver dependable performance. Engineered to meet strict SAE standards, these washers are designed for high-clamp-load applications in automotive, industrial, and heavy equipment assemblies where joint integrity matters most.
Built for Strength and Uniform Hardness
Thru Hardened Medium Carbon Steel
Manufactured from medium carbon steel compatible with SAE J429 fastener systems, these washers undergo a full thru-hardening heat treatment process. Unlike surface-hardened alternatives, thru hardened washers maintain uniform hardness throughout the entire cross-section. This ensures superior resistance to crushing, deformation, embedding, and galling under extreme torque and pressure.
Plain Finish for Controlled Environments
The plain, uncoated steel finish offers a natural metal appearance and is ideal for indoor or controlled environments where corrosion resistance is not the primary concern. This finish also provides excellent surface contact for accurate torque readings and optimal clamping force retention.
Precision Dimensions and Mechanical Performance
SAE-Sized for Proper Fit
These flat washers are produced according to SAE dimensional standards, featuring a smaller outside diameter than USS washers for a tighter, more precise fit around SAE bolts. Inner diameters are engineered to closely match corresponding bolt sizes, ensuring stable alignment and load transfer.
High Hardness and Load Retention
Heat treatment enhances hardness, allowing the washer to withstand high preload forces without distortion. This helps maintain bolt tension and consistent clamping force over time, reducing the risk of joint failure in demanding applications.
Made in the USA for Quality Assurance
Manufactured to SAE J995 standards, these thru hardened flat washers support domestic quality control and reliable performance. Common applications include automotive assemblies, truck components, industrial machinery, steel fabrication, and maintenance operations requiring secure, high-strength bolted joints.
For strength, precision, and long-term durability, USA-made SAE thru hardened flat washers with a plain finish remain a trusted solution in performance-driven fastening systems.
