5/16" Grade 9 Tension Flat Washer USS Pattern L9 - USA Alloy Steel Yellow Zinc Plated

PRODUCT SPECIFICATIONS (Part # 0000-109641)
Fastener Type:	Tension Flat Washer USS Pattern L9 - USA
Size Description:	5/16"
Diameter/Nominal Size:	5/16"*
Inside Diameter:	0.339-0.349"
Outside Diameter:	0.681-0.703"
Thickness:	0.056-0.071"
System of Measurement:	Inch
Grade:	9
Material:	Alloy Steel
Finish:	Yellow Zinc Plated
Used with:	Bolts/Screws up to Grade 9, Alloy Socket Screws, 12-Point Flange Screws
Average Piece Weight:	0.0122000 lbs.
Country of Manufacture:	United States

*Washer Sizing: Washer sizes are nominal (sized for the bolt that the washer will fit). Actual inside diameter is almost always larger than stated size. Please see the Inside Diameter spec in the table above, if available.

Washers are thin disk-shaped plates with a hole that is used to distribute the load of a threaded fastener such as a bolt or nut; often have an outer diameter (OD) about twice their inner diameter (ID), but this can vary based upon the washer. Washers come in many different varieties; flat washers, split lock washers, toothed lock washers, beveled washers in both steel and iron, etc.