Hillman 5/16 in. Diameter x 3-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack
SKU: 11419622405

Hillman 5/16 in. Diameter x 3-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

$36.89 $40.99
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Description

Hillman 5/16 in. Diameter x 3-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-PackHillman Grade 5 Zinc Hex Head Cap Screws, 5 16 in. x 3 1 2 in., 50 Pack These Grade 5 hex head cap screws from Hillman deliver reliable fastening strength for automotive, machinery, and general construction projects. Made of steel with a heat treated zinc finish, they resist wear while the washer faced head provides a better seal. Key Features: Grade 5 Strength: Heat treated steel provides higher tensile strength for demanding applications Corrosion

Hillman Grade 5 Zinc Hex Head Cap Screws, 5/16 in. x 3-1/2 in., 50-Pack

These Grade 5 hex head cap screws from Hillman deliver reliable fastening strength for automotive, machinery, and general construction projects. Made of steel with a heat-treated zinc finish, they resist wear while the washer-faced head provides a better seal.

Key Features:

  • Grade 5 Strength: Heat-treated steel provides higher tensile strength for demanding applications
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
  • Washer-Faced Hex Head: Flat bearing surface under head improves sealing and load distribution
  • Partially Threaded Shank: Adds shear strength while allowing precise clamping
  • Coarse Thread Compatibility: Ideal for quick assembly and strong hold with standard nuts

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 3-1/2 inch
Material Steel
Finish Heat-treated zinc
Grade Grade 5
Head Type Hex head with washer face
Thread Type Coarse
Threading Partially threaded along shank
Units Imperial
Pieces per Pack 50
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are Grade 5 hex cap screws with a partially threaded shank.

Q: What size are these screws?
A: They are 5/16 inch diameter by 3-1/2 inch length.

Q: What material and finish?
A: Steel with a heat-treated zinc finish for added strength and wear resistance.

Q: What thread type do they use?
A: Coarse thread.

Q: How many are in the box?
A: 50 pieces per pack.

Industrial polish with purposeful strength

I love how these zinc-kissed hex cap screws bring a refined industrial note to projects—sleek, resilient, and unapologetically functional. The washer-faced head is a subtle design detail that reads clean while working hard behind the scenes. Style them with raw woods and matte black hardware for a balanced, tailored contrast. They’re the quiet essential that elevates craftsmanship to a luxe finish.

Choose these Hillman Grade 5 hex cap screws for dependable strength and a clean, corrosion-resistant finish on your next build.

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: 11419622405

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Claire S
Louisville, US
★★★★★ 5
A Staple in Skin Care Routine
Style: Milky Toner
This toner has become a staple in my skincare routine. I have sensitive skin and a lot of products tend to cause irritation or redness, but this one has been incredibly gentle from the start. My skin always feels soft, calm, and hydrated after using it. The texture is lightweight with an almost soapy feel at first, but it absorbs quickly and never leaves my skin feeling greasy or heavy. It layers well with the rest of my skincare and works great both morning and night. I also appreciate that it gives results similar to more expensive brands without the high price tag. Definitely one of the better affordable skincare products I’ve tried.
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Reviewed in the United States on May 21, 2026
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Jewelbee
Draper, US
★★★★★ 5
My Favorite Product in the Milky Line
Style: Milky Toner, Style: Milky Toner
This toner has easily become my favorite product from Thayers brand and all other brands. I’m very picky about my skincare routine, especially when it comes to products I use daily, and this one has completely earned a permanent spot in my routine. It feels incredibly gentle, hydrating, and soothing on the skin without feeling sticky or heavy. I love the ingredients, especially the snow mushroom and hyaluronic acid, because my skin always feels soft, balanced, and refreshed after using it. I’ve also noticed my pores looking smoother and overall healthier since incorporating this toner consistently. The formula works beautifully with the rest of the Milky line, and my skin genuinely looks and feels better when I use it regularly. I’ll absolutely continue repurchasing this product.
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Reviewed in the United States on May 26, 2026
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Leanna Moon
Birmingham, US
★★★★★ 5
Hydration + glow without irritation!
Style: Milky Toner
I’ve been using this milky toner for a couple months now and it has quickly become a staple in my routine. The texture is lightweight but creamy, which makes it feel more nourishing than a typical watery toner. It absorbs really well into my skin without leaving and sticky or greasy residue. I haven’t noticed that my skin feels softer and more hydrated after applying it AND it layers so nicely with serums and moisturizers. One thing I really appreciate is how gentle it is on my skin. It doesn’t cause any irritation, redness or breakouts! I actually feel like it helps calm my skin on days when It feels a little dry or “stressed”. Overall, I think it is a great option if you are looking for a hydrating, soothing toner that fits easily into either a simple or more detailed skincare routine. I will 100% be repurchasing when I run out of my current bottle
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Reviewed in the United States on April 10, 2026
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Bethjessie
Los Angeles, US
★★★★★ 5
This will make your face soft and glowy!
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This is GOOD STUFF! First cleanse face, then I tried using both a cotton ball and a cotton round, but in the end, I put a small amount right on my fingers and massage into my face. It seems pretty wet at first, so I let it air dry for a minute before adding my moisturizer. My face really seems smooth and even has a glow to it, which is unbelievable to me! My face also feels very soft and hydrated (and usually has some dry patches).
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Belleville, US
★★★★★ 5
Practically perfect in every way
Style: Milky Toner
The results (in combination with other care products) have been amazing! I’m a 37yo trans-woman, who in my late 20s looked like I was in my mid 30s. My skin is much smoother than it used to be (to be fair, in addition to laser hair removal’s results), my tone is more uniform, and with more hydration is fewer wrinkled areas. This is definitely a critical part of my skin care routine, which allows me to need hardly anything for my make-up routine. Value/price is fair, and I have no issue paying that again.
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Reviewed in the United States on May 26, 2026

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