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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Chelle
Fort Morgan, US
★★★★★ 5
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Size: Small (Pack of 1), Product Packaging: Standard Packaging
We purchased this for our Australian Shepherd puppy who is teething and this is a high quality dog chew toy! It’s a little smaller than I expected but still a nice size for her. We put it in the freezer so it is cold on her teeth. She carries this around and chews on it and it has been a wonderful toy for her! It is durable, thick and solid, doesn’t squeak, and is a safe toy for her! I would highly recommend this if you have a super chewer dog, puppy who is teething or looking for a quality dog chew toy!
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Reviewed in the United States on March 16, 2026
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Brenda Dowers
Louisville, US
★★★★★ 5
Great for aggressive chewers
Size: Medium, Product Packaging: Standard Packaging
Puppy loves it, heavy duty first toy he didn't chew apart
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Reviewed in the United States on May 17, 2026
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MissouriMule1
Chelsea, US
★★★★★ 5
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Size: Small (Pack of 1), Product Packaging: Standard Packaging
My chesky terrier LOVES to play fetch with this ring. It is durable, NO squeaker which makes me happy, a nice solid weight. She weighs 22 lbs and I got the small. I do NOT let her chew on this after her playtime.
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Reviewed in the United States on May 11, 2026
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Juls
Pawtucket, US
★★★★★ 4
Non destructive toy
Size: Small (Pack of 1), Product Packaging: Standard Packaging
2nd one our dogs favorite.
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Reviewed in the United States on May 31, 2026
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Joshua Pasley
Port Orchard, US
★★★★★ 5
Great for chewers!
Size: Small (Pack of 1), Product Packaging: Standard Packaging, Size: Small (Pack of 1), Product Packaging: Standard Packaging
Our girl loves her new toy. She is super protective over it and goes crazy chewing it. The material and quality are great. She hasn’t made a dent in it yet. It’s light weight and true to size perfect for a puppy or small dog. It can be washed off easily since it’s made of rubber. If you want something your dog can solo play with that doesn’t squeak it’s perfect. The shape makes it great for carrying around by your pup or even playing tug of war between two dogs. Highly recommend!
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Reviewed in the United States on April 9, 2026

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