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NSI Industries JSW77 - Flat Washer, Steel material, Zinc Chromate finish, 1-5/16 in. outside diameter, 21/32 in. inside diameter, 5/8 in. fits bolt sizes, 100 per pack
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NSI Industries JSW77 Flat Washer, Steel material, Zinc Chromate finish, 1-5/16 in. outside diameter, 21/32…

Alternate Item Number: 80505

UPC: 639720805055

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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 JSW77 Flat Washer, SKU JSW77, is a precision-engineered steel washer designed for industrial fastening applications requiring uniform load distribution and corrosion resistance. Manufactured from durable steel with a Zinc Chromate finish, this washer provides robust protection against rust and oxidation in demanding environments. With an outside diameter (OD) of 1-5/16 inches and an inside diameter (ID) of 21/32 inches, the JSW77 is specifically sized to accommodate 5/8-inch bolt diameters, ensuring a secure fit for standard fasteners. Each pack contains 100 washers, making it an economical bulk solution for construction, manufacturing, and mechanical assembly operations. The flat washer’s primary function is to distribute fastener load evenly across a surface, preventing material damage and maintaining joint integrity under vibration and stress. Its steel construction and Zinc Chromate plating align with NSi Industries’ industrial fastener standards, offering consistent performance in applications where reliability is critical. Unlike reducing washers (e.g., NSi 1065 or 1078), the JSW77 provides a standard bearing surface for fasteners within its specified size range. This washer is ideal for use in machinery, structural assemblies, and equipment where secure, long-lasting connections are required. The JSW77 is part of NSi Industries’ JSW series, which includes domestic steel zinc, 18-8 stainless steel, and 316 stainless steel variants for diverse application needs.
  • Steel construction with Zinc Chromate finish for corrosion resistance
  • 1-5/16" outside diameter, 21/32" inside diameter, fits 5/8" bolts
  • 100 washers per pack for bulk procurement efficiency
  • Distributes fastener load evenly to prevent material damage
  • Compatible with standard industrial fastening applications

Specifications

Application
Metal to Metal
Finish
Zink Chromate
Fits Bolt Sizes
5/8 IN
Inside Diameter
21/32 IN
Material
Steel
Outside Diameter
1.3125 in
Outside Diameter
33.3375 mm
Size
1-5/16 in. OD, 21/32 in. ID, fits 5/8 in. bolts
Standard
SAE
Type
Flat Washer
Package Dimensions (L x W x H)
3 IN x 3 IN x 4.57 IN
Package Dimensions (L x W x H)
7.62 cm x 7.62 cm x 11.6078 cm
Package Weight (Imperial)
2.600 L
Package Weight (Metric)
1.179 kg
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Frequently Asked Questions

What type of washer is this product?

It is a Flat (SAE) Washer.

What product series does this specification sheet cover?

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

What washer materials are included in the JSW series?

The JSW series includes domestic steel zinc, 18-8 stainless steel, and 316 stainless steel washers.

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