SKU: 83303479083

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

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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]
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SKU: 83303479083

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4.2 ★★★★★
Based on 25 reviews
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G
Verified Purchase
Glenn C. Sammis
Battle Creek, US
★★★★★ 4
Cute and so much fun!
Size: Small
Great squeak noise!! Our dog loves to play fetch with them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
E
Verified Purchase
Erika
Louisville, US
★★★★★ 5
An instant favorite for my one year old pup!
Size: Small, Size: Small
I came across these randomly while looking for presents for my one year old 10lb chi-mix. I gave her one to start with just to make sure it wasn’t flimsy & she wasn’t going to destroy it because she is definitely a chewer. She was instantly OBSESSED! These are now her most treasured squeakies. They’re the perfect size for her too and I’m happy to say they’ve held up well to her pouncing/jumping on them constantly. They’re definitely not quiet but we get an absolute kick out of watching the way she plays with them. If I could give 10 stars I would. Almost two months later and the novelty hasn’t worn off to her. I’ve saved them to my lists just in case we ever need to replace them for any reason. I’m not sure she’ll ever love a toy as much as these
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
J
Verified Purchase
Jennifer
Houston, US
★★★★★ 5
Squeak is not super loud! Family fun!
Size: Small
My small dog loves these toys. He detects them the very moment they enter the house, even more if the package has been opened. I used to give him one at a time because he would favor the newest one for quite a long time. Now he sniffs them out no matter where I store them. The squeakers have fallen INTO the toy rather than going down his throat, and they're rather difficult to chew out of place. They do collect quite a bit of debris and hair from the floor, so a good rinsing is needed sometimes. My little 13 lb terrier mix loves them with and without squeakers. For this dog, it's the best toy we've found. We can do a little tug of war with it, throw and fetch, and he's even copied various ways we squeak the toy. I don't know what your pup will think, but these seem the most safe, longest-lasting, most engaging toy he has. If we step on it by accident, he always comes running for some fun. Let us know if you have come up with a new game! We call one "Puppy Puzzle" where we bury it under various objects such as blankets, boxes, and find ways to squeak it when he can't quite find it. It's a daily ritual. We also like to be creative when we introduce new ones by hiding them, or mixing them in with older ones. For us, it is a family interactive toy. He loses interest faster when playing alone. Plus, because of its size and random bouncing directions, it often gets out of pup's reach under furniture or in spaces too small for him to get it himself. We like playing with our dog, so it works for us. We've tried other toys with similar sizes and appearances, but for whatever reason, this is the one that has become part of daily life, and there appears to be no boredom yet after 2 years. Love!
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Reviewed in the United States on February 1, 2020
A
Verified Purchase
andreal
New York, US
★★★★★ 3
Dog won’t bite on these
Size: Small
Great squeak, squishiness, and colors. Dog won’t bite on latex…
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026
V
Verified Purchase
Verucat
West Palm Beach, US
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025

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