Hillman 3/8 in. Diameter x 1 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 100-Pack
SKU: 83303479083

Hillman 3/8 in. Diameter x 1 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 100-Pack

Sale price$31.38 Regular price$34.87
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Description

Hillman 3/8 in. Diameter x 1 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screw, 100-PackHillman Grade 8 Hex Head Cap Screws, 3 8" x 1", 100 Pack Heavy duty Grade 8 hex head cap screws engineered from heat treated steel for high strength fastening. Coarse thread, partially threaded design with washer face under the head delivers secure clamping in machinery, automotive, and structural applications. Key Features: Grade 8 Strength: Heat treated steel provides high tensile strength for demanding loads Coarse Thread: Reliable bite and faster

Hillman Grade 8 Hex Head Cap Screws, 3/8" x 1", 100-Pack

Heavy-duty Grade 8 hex head cap screws engineered from heat-treated steel for high-strength fastening. Coarse-thread, partially threaded design with washer face under the head delivers secure clamping in machinery, automotive, and structural applications.


Key Features:

  • Grade 8 Strength: Heat-treated steel provides high tensile strength for demanding loads
  • Coarse Thread: Reliable bite and faster assembly in general-purpose applications
  • Partially Threaded Shank: Improves shear strength and alignment like a hex bolt
  • Washer Face Head: Smooth bearing surface enhances seal and distributes load
  • Bulk Pack Value: 100 boxed screws, 3/8 in. diameter x 1 in. length

Specifications Table:

Specification Details
Brand Hillman
Product Type Hex Head Cap Screw
Diameter 3/8 inch
Length 1 inch
Material Steel
Grade Grade 8
Finish Yellow dichromate; heat-treated
Thread Type Coarse
Threading Partially threaded along shank
Head Style Hex head with washer face
Units per Pack 100 (boxed)
Model Number 220121
UPC (alt) 008236081695
Weight 4.4 lb

Frequently Asked Questions (FAQ):

Q: What size are these screws?
A: Each screw is 3/8 inch diameter by 1 inch length.


Q: What material and grade are they?
A: They are heat-treated steel, Grade 8.


Q: Are the threads coarse or fine?
A: Coarse thread.


Q: Are they fully threaded?
A: No, they are partially threaded along the shank.


Q: What finish do they have?
A: Yellow dichromate heat-treated finish for added wear resistance.


Industrial Strength with a Golden Sheen

These Grade 8 cap screws bring a refined, utilitarian beauty to any workshop or garage—sleek geometry crowned with a subtle yellow dichromate glow. I love the confident hex head and washer face; it feels precise, intentional, architectural. Decant them into a clear bin on open shelving beside oiled wood and matte black tools for a quietly luxe vignette. Functional and formidable, they’re the discreet heroes of a well-appointed space.


Equip your projects with Grade 8 strength—add this 100-pack of Hillman hex head cap screws to your cart today.

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: 83303479083

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Petra
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★★★★★ 5
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Size: 1PCS, Color: Holo Silver
Love love LOVEEE. I feel like a fairy! You only need a short spritz to get a perfect amount of glitter. The sparkles are beautiful, rainbowy and long lasting. I sprayed some on me yesterday and it's still going strong. It dries quickly and really gets those sparkles down. Even if you rub the part of you that's been glittered, it sticks! It doesn't even have a chemically smell, it's kind of flowery? Which I totally didn't expect. However I would recommend spraying yourself outside because the glitter gets all over the house. Unfortunately (or fortunately) my floor will forever be glittered.
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Reviewed in the United States on March 29, 2025
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Kristina Lozon-Kimling
Houston, US
★★★★★ 5
Really pretty sparkle!
Size: 1PCS, Color: Gold
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Reviewed in the United States on July 12, 2025
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Ruthanime
Lexington, US
★★★★★ 5
Must buy!!
Size: 1PCS, Color: Holo Silver, Size: 1PCS, Color: Holo Silver
After carefully looking at the reviews, I ended up purchasing the silver holographic body glitter spray. I immediately sprayed it on my arm, and it blasted my arm full of glitter! I wiped my arm and already dried down! I can’t wait to spray this in my hair and see how long this can last, but I’m definitely buying more with a different variety of colors. Definitely worth the money. I’m obsessed! I will say that if you don’t want glitter everywhere then spray outside.
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Reviewed in the United States on March 5, 2026
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DreamandBelieve
Bozeman, US
★★★★★ 1
Waste of money
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Barely noticeable! I bought the green glitter and let's just say there's Very little glitter! Pretty much non-existent. Definitely not worth $10 and It's not returnable. For $10 I would have expected something noticeable
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Anneliese
Dallas, US
★★★★★ 4
Very pretty.....but it spreads.....a lot
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