SKU: 35569724716

Hillman 5/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread, 100-Pack

Sale price$71.99 Regular price$79.99
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Description

Hillman 5/16 in. Diameter x 3 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread, 100-PackHillman Grade 8 Hex Cap Screws, 5 16" x 3", 100 Pack Heavy duty Grade 8 hex head cap screws built from heat treated steel for demanding fastening applications. Coarse threaded with a washer face for secure seating and long lasting performance. Ideal for machinery, automotive, and construction projects. Key Features: Heavy Duty Grade 8: Engineered for high strength applications and superior load bearing performance Heat Treated Steel: Enhanced

Hillman Grade 8 Hex Cap Screws, 5/16" x 3", 100-Pack

Heavy-duty Grade 8 hex head cap screws built from heat-treated steel for demanding fastening applications. Coarse-threaded with a washer face for secure seating and long-lasting performance. Ideal for machinery, automotive, and construction projects.


Key Features:

  • Heavy-Duty Grade 8: Engineered for high-strength applications and superior load-bearing performance
  • Heat-Treated Steel: Enhanced durability and wear resistance for long service life
  • Coarse Thread: Reliable grip and faster assembly in tapped holes or with nuts
  • Washer Face Under Head: Better seal and seating against surfaces to reduce loosening
  • Bulk Value Pack: 100 screws sized 5/16 in. diameter x 3 in. length

Specifications Table:

Specification Details
Brand Hillman
Product Type Hex Head Cap Screws
Diameter 5/16 inch
Length 3 inch
Material Steel
Finish Heat Treated (yellow dichromate referenced)
Grade 8
Thread Type Coarse
Threading Partially threaded along shank
Head Style Hex head with washer face under head
Number in Package 100 pack
Packaging Type Boxed
Tightening Method Wrench or drill
Package Height 3.2 in
Package Width 4.3 in
Package Length 5.3 in
Package Weight 7.6 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank.


Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill fitted with the appropriate hex socket.


Q: What is the thread type?
A: Coarse thread.


Q: What material and finish do they have?
A: Made of heat-treated steel; yellow dichromate style finish referenced for strength and wear resistance.


Q: Can these be used in automotive or machinery applications?
A: Yes, as Grade 8 heat-treated steel hex cap screws, they are suitable for high-stress applications in automotive and machinery.


Industrial Strength with Clean, Purposeful Lines

These hex cap screws bring a refined, utilitarian elegance to any build—sleek heads and crisp geometry that read as confident and modern. The heat-treated Grade 8 steel delivers a commanding presence and resilience. Style them with blackened hardware and raw oak shelving to underscore a crafted, industrial vibe. Essential, functional, and impeccably strong—this is hardware that elevates the everyday.


Secure your projects with trusted Grade 8 strength—add this Hillman 100-pack to your toolkit 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: 35569724716

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JavaChild
Belleville, US
★★★★★ 5
Cools quite well, about 85% but works well for hot flashes
Being in perimenopause I tend to have hot flashes at the most inopportune times, especially in the middle of winter where I'm sleeping practically naked and everyone in the house is sleeping with hoodies and sweats and extra blankets. I just found out that one side is extremely cooler than the other and the first night I had it I washed it gently dried it in a very light, delicate setting on my dryer. In fact, I didn't let it dry all the way and let it hang up and the first three nights I slept with this blanket. I slept an entire 8 hours instead of the usual three because hot flashes like to do that to you. Wake you up at 2:00 in the morning or 5:00 in the morning when you have to get up for work in an hour. It's very light. It smells great. It's very soft and one side like I said is cooler than the other and you will feel so much better wearing this or sleeping with this rather. I'm
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
P
Verified Purchase
patti
Massapequa, US
★★★★★ 5
Five stars!!⭐️ ⭐️⭐️⭐️⭐️
So comfortable and cooling, my son stays asleep at night because of this amazing comforter! Incredibly cooling and perfect weight we love it!
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Reviewed in the United States on May 10, 2026
A
Verified Purchase
Alina Choughale
Omaha, US
★★★★★ 5
Keeps me cooler than before!!
Color: Light Gray, Size: Full / Queen (90"x90")
I have been going back and forth about buying the Rest comforter but it is so expensive and then I stumbled across this. I am very pleased, it is light and one side usually stays cool to the touch. It does warm up with body heat but usually I let it sit in front of the fan for few minutes and it’s cold again. It was made a huge difference and it good quality for what you pay.
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Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jodi
Charlottesville, US
★★★★★ 5
A true cooling blanket
Color: Light Gray, Size: Full / Queen (90"x90")
Hot sleeper paradise! It’s so silky, lightweight and extremely comfortable. I definitely recommend this for anyone who is usually is a hot sleeper or going through menopause (the night sweats are the worse)
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Reviewed in the United States on May 5, 2026
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Verified Purchase
Brittney C
Massapequa, US
★★★★★ 4
Silky comfort
Color: Light Gray, Size: Full / Queen (90"x90")
I love this comforter. I’ve been using a blanket I ordered on another site for the last year that I loved but needed a new one because my son got bubble gum on it. I ordered this one after searching for a a couple of days. I was initially disappointed because it didn’t feel like it had the same cooling factor as my prior blanket. However, after sleeping with this blanket for the past 2 nights, I can say I’m in love. It’s still “cool”, just in a different way. I’m so excited to go lay down. Lol. It feels like a silk sandwich with light, soft comforter material on the inside. Silky and cool. Definitely recommend.
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Reviewed in the United States on March 17, 2026

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