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NSI Industries JSSW141 - Flat Washer, Stainless Steel material, 13/16 in. outside diameter, 13/32 in. inside diameter, 3/8 in. fits bolt sizes, 100 per pack, 316 grade
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NSI Industries JSSW141 Flat Washer, Stainless Steel material, 13/16 in. outside diameter, 13/32 in. inside…

Alternate Item Number: 89541

UPC: 639720895414


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Specification Sheet

Contact for Pricing

Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The NSI Industries JSSW141 316 Stainless Steel Flat Washer is a precision-engineered component designed for critical fastening applications in corrosive and high-stress environments. Constructed from Type 316 stainless steel, this washer provides superior resistance to chlorides, acids, and other harsh chemicals, making it ideal for marine, chemical processing, food and beverage, pharmaceutical, and outdoor infrastructure applications. The 316 grade includes molybdenum for enhanced corrosion resistance compared to standard 18-8 stainless steel, ensuring long-term reliability in chloride-rich or high-moisture conditions where pitting and crevice corrosion are common concerns. This flat washer features a 13/16-inch outside diameter (OD) and a 13/32-inch inside diameter (ID), specifically sized to accommodate 3/8-inch bolts. The flat design distributes clamping force evenly across mating surfaces, reducing stress concentrations and preventing bolted joint loosening under vibration. Each pack contains 100 washers, providing an economical bulk solution for industrial maintenance, construction, and manufacturing projects requiring consistent, high-quality fasteners. The JSSW141 is part of NSI Industries' JSW series of flat washers, which includes domestic, zinc-plated steel, 18-8 stainless steel, and 316 stainless steel variants. This series is manufactured to SAE flat washer specifications, ensuring dimensional consistency and compatibility with standard hardware. The 316 stainless steel composition guarantees resistance to rust, staining, and degradation in demanding operational conditions, including exposure to saltwater, industrial chemicals, and temperature fluctuations.
  • Material: 316 stainless steel with molybdenum for superior corrosion resistance
  • Dimensions: 13/16" outside diameter, 13/32" inside diameter, fits 3/8" bolts
  • Pack quantity: 100 washers per pack for bulk industrial applications
  • Flat design distributes load evenly, reducing stress and preventing loosening
  • Ideal for marine, chemical processing, food/beverage, pharmaceutical, and outdoor infrastructure

Specifications

Application
Metal to Metal
Fits Bolt Sizes
3/8 IN
Inside Diameter
13/32 IN
Material
Stainless Steel
Outside Diameter
0.8125 in
Outside Diameter
20.6375 mm
Standard
SAE
Type
Flat Washer
Package Dimensions (L x W x H)
3 IN x 3 IN x 2.15 IN
Package Dimensions (L x W x H)
7.62 cm x 7.62 cm x 5.461 cm
Package Weight (Imperial)
0.650 L
Package Weight (Metric)
0.295 kg
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Frequently Asked Questions

What product series does this specification sheet cover?

This specification sheet applies to all Flat (SAE) Washers in the JSW series.

What materials are JSW series Flat (SAE) Washers made from?

JSW series Flat (SAE) Washers are available in Steel Zinc, 18-8 Stainless Steel, and 316 Stainless Steel.

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