F436M Metric Sizes Flat Washers with Plain Finish
F436M Metric Size Flat Washers with Plain Finish
F436M Metric Size Flat Washers with Plain Finish are hardened structural washers engineered for high-strength metric bolting applications where dependable load distribution, dimensional accuracy, and resistance to deformation are essential. Manufactured to meet the requirements of ASTM F436M, these metric flat washers are commonly used with high-strength structural bolts, heavy hex nuts, threaded fasteners, and other critical bolted connections in construction and industrial applications.
Unlike general-purpose flat washers, ASTM F436M washers are designed specifically for use in demanding structural fastening systems. Their hardened construction helps provide a durable bearing surface beneath the bolt head or nut while distributing clamping forces across a larger area.
ASTM F436M Metric Washer Standards
The ASTM F436M specification covers hardened steel washers in metric dimensions intended primarily for use with metric high-strength structural bolts and nuts. F436M washers help protect the mating surface while supporting consistent bolt tension and reducing the possibility of localized crushing or deformation during tightening.
Metric sizing allows these washers to properly match compatible metric bolts, studs, and structural fastening assemblies. Always verify washer dimensions, type, and applicable bolting requirements before installation.
Plain Finish Hardened Steel Washers
A plain finish provides an uncoated steel surface without zinc plating, hot-dip galvanizing, or another protective coating. Plain finish F436M Metric Flat Washers are commonly specified for indoor applications, controlled environments, fabricated assemblies, or projects where a separate corrosion-protection system will be applied.
Because plain steel offers limited corrosion protection, environmental conditions should be considered when selecting these washers.
Heavy-Duty Metric Structural Flat Washers
F436M Metric Size Flat Washers with Plain Finish are an excellent choice for structural steel construction, industrial equipment, machinery, fabrication, maintenance, MRO, and heavy-duty bolted assemblies. Their hardened steel construction, metric dimensions, and ASTM F436M requirements make them a dependable solution for high-strength fastening systems where proper load distribution and reliable bolted-joint performance are critical.