Hillside Washers

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Call Us at 714-676-8200 to Order

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Don’t see your exact size or strength requirement hillside washer? Call us!

We’ll custom manufacture hillside washers to your specifications.

Tengco’s Flanged Hillside Washers have been tested & approved by R. Ralph Sinno, PH.D.; Professional Engineer & Professor of Civil Engineering at Mississippi State University.

Dr. Sinno concluded from the testing that ordinary standard Flat Washers can be used in the application, in lieu of any special washers recommended to be necessary with other product lines.  Documents will be supplied upon request.

Hillside Washers by Tengco, Inc.

Flanged Hillside Washers

Cast Ductile Iron Patent Pending

Hillside Washer Size Box Qty  Lbs/M Tengco Hillside Washer Part Number – Import Tengco P/N


Made in USA

1/2-5/8 Hot Dip Galv 40 1169.50 SWH1258.1-H SWH1258.1-H (D)
1/2-5/8 Grey Paint 40 1169.50 SWH1258.1-GP SWH1258.1-GP (D)
1/2-5/8 Red Paint 40 1169.50 SWH1258.1-RP SWH1258.1-RP (D)
3/4-7/8 Hot Dip Galv 40 1267.80 SWH3478.1-H SWH3478.1-H (D)
3/4-7/8 Grey Paint 40 1267.80 SWH3478.1-GP SWH3478.1-GP (D)
3/4-7/8 Red Paint 40 1267.80 SWH3478.1-RP SWH3478.1-RP (D)
1”-1-1/8” Hot Dip Galv 25 1752.40 SWH1118.1-H SWH1118.1-H (D)
1”-1-1/8” Grey Paint 25 1752.40 SWH1118.1-GP SWH1118.1-GP (D)
1”-1-1/8” Red Paint 25 1752.40 SWH1118.1-RP SWH1118.1-RP (D)
1-1/4” Hot Dip Galv 20 2420.00 SWH114.1H SWH114.1H (D)
1-1/4” Grey Paint 20 2420.00 SWH114.1GP SWH114.1GP (D)
1-1/4” Red Paint 20 2420.00 SWH114.1RP SWH114.1RP (D)
1-1/2” Red Paint 20 2900.00 SWH112.1-RP US made part not available



Standard Hillside Washers

Cast Grey Iron

Hillside Washer Size Box Qty Lbs/M Tengco P/N
3/8 Plain 350 244.00 SWH38-P
1/2 Plain 125 328.94 SWH12-P
5/8 Plain 100 426.05 SWH58-P
3/4 Plain 75 451.09 SWH34-P
7/8 Plain 50 828.29 SWH78-P
1” Plain 30 1242.40 SWH1-P
1-1/8-1-1/4 Plain 15 3084.20 SWH11814-P
Standard Hillside Washers by Tengco, Inc.

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Since 1979 Tengco has supplied our customers with superior custom manufactured parts for a wide variety of industries and applications. Our mission is to provide quality products on time at competitive prices.

From standard nuts and bolts and hillside washers to specialty fasteners, castings, forgings and stampings, our extensive product knowledge can help your organization maintain the highest standards for your custom parts.

Address: 14030 Bolsa Lane, Cerritos, CA 90703

Phone: (714) 676-8200

How Can Tengco Help You?

Tengco is a hardware distributor that provides global sourcing solutions for custom manufacturing.  We provide world class global sourcing, service and distribution.

Tengco is the perfect solution to your global sourcing needs.  We can provide anything from standard hillside washers, nuts and bolts to specialty fasteners, castings, forgings and stampings

We have been working with our customers for over 35 years to develop custom metal components for a wide variety of industries and applications.

Tengco is ISO 9001:2015 Certified through our midwest distribution center and the combination of our experienced engineering team, logistics team, customer service representatives and sales staff can help your organization maintain the highest standards for your custom parts.

Tengco supplies customers throughout the United States, Canada, Mexico, South America, Europe and Asia and we can’t wait to speak to you about how we can help your organization.

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Call us at 714-676-8200

We can make your special item!

Our experienced engineers can help develop your custom forging, casting, stamping or machined part.