SKU: 34213616893

Hillman Yellow Dichromate Hardened Steel 5/16 in. SAE Flat Washer, 100 Pack

$16.78 $18.64
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Description

Hillman Yellow Dichromate Hardened Steel 5/16 in. SAE Flat Washer, 100 PackHillman 5 16 in. SAE Yellow Dichromate Flat Washers (100 Pack) Grade 8, heat treated SAE flat washers made from hardened steel with a yellow dichromate finish for added corrosion resistance. Sized for 5 16 in. bolts, they distribute load and protect surfaces in demanding fastening applications. Key Features: Durable Construction: Hardened Grade 8 steel for high strength applications Corrosion Resistant Finish: Yellow dichromate coating helps protect

Hillman 5/16 in. SAE Yellow Dichromate Flat Washers (100-Pack)

Grade 8, heat-treated SAE flat washers made from hardened steel with a yellow dichromate finish for added corrosion resistance. Sized for 5/16 in. bolts, they distribute load and protect surfaces in demanding fastening applications.

Key Features:

  • Durable Construction: Hardened Grade 8 steel for high-strength applications
  • Corrosion Resistant Finish: Yellow dichromate coating helps protect against rust
  • Precise Fit: SAE sizing for use with 5/16 in. bolts and coarse-thread fasteners
  • Load Distribution: Spreads clamping force to reduce surface damage and loosening
  • Bulk Value: Convenient 100-pack for jobsites and shop replenishment

Specifications Table:

Specification Details
Washer Type Flat
Material Hardened Steel
Grade Grade 8
Finish Yellow Dichromate
Size 5/16 in
Intended Bolt Size For use with 5/16 in bolts or screws
Standard SAE
Quantity per Pack 100
Heat Treatment Heat Treated
Assembled Product Weight 0.6 lb

Frequently Asked Questions (FAQ):

Q: What bolt size do these washers fit?
A: They are designed for use with 5/16 in. bolts or screws (SAE sizing).

Q: Are these suitable for high-stress applications?
A: Yes. They are heat-treated, Grade 8 hardened steel washers intended for demanding fastening tasks.

Q: Will the finish resist rust?
A: The yellow dichromate coating provides enhanced corrosion resistance compared to plain steel.

Q: Are these flat or lock washers?
A: They are flat washers.

A Subtle Pop of Industrial Precision

These yellow dichromate washers lend a refined industrial note—sleek, purposeful, and impeccably finished. I love the luminous gold tone that whispers durability while elevating utilitarian details. Style them as visible accents on custom shelving or hardware where function becomes an elegant statement. They’re the quiet luxury essential that keeps every detail polished and precise.

Outfit your next project with these Grade 8, corrosion-resistant washers and lock in reliable, professional results.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34213616893

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4.5 ★★★★★
Based on 2211 reviews
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Product Reviews
A
Verified Purchase
A. Shepherd
Charlottesville, US
★★★★★ 4
Body pillow covers
Color: White, Size: Body（20"X 54"）
I ordered the body pillow covers. They fit my pillow perfectly and the fabric is smooth and silky, but I did not find them cooling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
K
Verified Purchase
Khendri
Whiting, US
★★★★★ 5
Cooling King-Size Pillows (used on a Queen pillows to tuck the extra in)
Color: Navy Blue, Size: 2 Pack King（20"X 36"）, Color: Navy Blue, Size: 2 Pack King（20"X 36"）
🛏️ Product Review: Cooling King-Size Pillows (used on a Queen bed) ⭐ The Good • These are king-size pillows, which I actually love on a queen bed because I can tuck the ends into the fabric. • The fabric feels slick and cool, but you don’t slip off of it. • They feel cold to the touch right out of the package (which is wild). • I sleep extremely hot and even run fevers at night due to a medical condition (literally 101–102° sometimes), and these pillows still stay cool where I lay my head. • I’ve honestly never slept this well in my life. • For the price, you cannot beat them, and they go on sale often. • These beat any high-end version I’ve tried. • If you sleep normal-temp and not lava-hot like me, you’re going to be VERY comfortable with these. ⚠️ The Bad • The fabric does show crease lines. • If wrinkles bother you, this might annoy you (doesn’t bother me personally). 🔧 What I’d Change / Tips for Care • Don’t use fabric softener — it clogs the cooling fabric and ruins how it works. • Wash with unscented detergent + a little vinegar. • Dry on low heat only (do NOT dry on high if you want the fabric to keep working long-term). ✅ Final Thoughts I will literally never not own these again. If you sleep hot, night-sweat, or just want a pillow that actually stays cool — these are it. 10/10 recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
A
Verified Purchase
A.N. Libby
Chelsea, US
★★★★★ 3
Love it but it stains
Color: Haze Blue, Size: 2 Pack Standard（20"X 26"）
I love these but had to knock some stars down for a single reason. They are soft, the material is somehow both substantial and airy at the same time, and a smooth, silky (not satin), cozy texture. The color was exactly as pictured. The envelope style works great to keep my pillows covered. The fabric lays perfectly. I love sleeping on this pillow case. Took two stars off because every single atom of oil on my face stained it immediately and won't come out in the wash. Its not subtle. You can see anywhere my face has been, forever. I don't have some incredibly oily face or hair, I've never had this happen to another pillow case in my life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
M
Verified Purchase
Michael
Port Orchard, US
★★★★★ 5
Good buy
Color: Navy Blue, Size: Body（20"X 54"）
Nice and soft , well packaged and looks good. Kinda pillowcase you find in a luxury hotel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
C
Verified Purchase
CJHenry
Lake Worth, US
★★★★★ 5
Silky and Soothing
Color: Cream, Size: 2 Pack Queen（20"X 30"）
I thought I was getting 1 of the queen sized but I got 2. I got these for my Pomeranian's fuzzy pillow. He's always hot and these are very cooling and very good quality. He loves them and are very comfortable for him. They totally transformed his shaggy old pillow. I used the larger body pillow covers to replace the covers I had. They matched my bedspread perfectly. I use 2 body pillows along the exterior wall in my bedroom where there is cold coming through the floor in the winter. I'm sure I will enjoy them in the summer when it's hot too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026

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