F436 Round Structural, Plain Thru-Hardened and Structural Flat Washers

F436 round structural flat washers are heat-treated and manufactured to ASTM F436 specification for use with A325 and A490 structural bolts in bearing-type and slip-critical connections. Blue Ribbon Fastener stocks plain-finish F436 washers in standard sizes.

Narrow Your Results By

Usages for F436 Round Structural, Plain Washers

F436 washers are installed under the bolt head or nut in structural steel connections per AISC and RCSC bolting requirements, distributing clamp load and preventing embedment under high-strength A325/A490 bolts.

F436 Structural Washers for all Industries

Structural steel fabrication, bridge construction, and commercial building projects all specify F436 washers for certified structural bolting assemblies. Blue Ribbon Fastener supplies washers with mill certifications.

F436 Round Structural, Plain Features for Engineers & Buyers:

Manufactured to ASTM F436 specification
Heat-treated for use under high-strength structural bolts
Plain (uncoated) finish for indoor and non-corrosive applications
Pairs with A325 and A490 structural bolts
Mill certifications available upon request
Same-day shipping on in-stock sizes when ordered by 2:30 PM CST
Volume and repeat customer pricing available — call or request a quote