Hillside Washers
These Parts are In-Stock and Ready to Ship!
Call Us at 714-676-8200 to Order
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.

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 |

Get In Touch
More Info
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.
Capabilities Video:
Don't See the Hillside Washers You Were Looking For?
We can make your special item!
Our experienced engineers can help develop your custom forging, casting, stamping or machined part.