SKU: 91208721423

Hillman 9/16 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-Pack

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Description

Hillman 9/16 in. Diameter x 4 in. Length Heat-Treated Steel Hex Head Cap Screw, Grade 8, 25-PackHillman Grade 8 Hex Head Cap Screws, 9 16 in. x 4 in. (25 Pack) Heavy duty Hillman hex head cap screws deliver reliable fastening for structural and machinery applications. Made from heat treated Grade 8 steel with a washer face under the head, they provide high torque capability and long lasting wear resistance. Key Features: Grade 8 Strength: Heat treated steel offers superior tensile strength for demanding loads High Torque Capability: Hex cap head

Hillman Grade 8 Hex Head Cap Screws, 9/16 in. x 4 in. (25-Pack)

Heavy-duty Hillman hex head cap screws deliver reliable fastening for structural and machinery applications. Made from heat-treated Grade 8 steel with a washer face under the head, they provide high torque capability and long-lasting wear resistance.


Key Features:

  • Grade 8 Strength: Heat-treated steel offers superior tensile strength for demanding loads
  • High Torque Capability: Hex cap head with machine threads ensures secure tightening with wrench or driver
  • Better Seal: Integrated washer face under head improves contact and load distribution
  • Durable Finish: Yellow dichromate treatment resists wear and corrosion
  • Bulk Convenience: 25 pieces per box for shop or jobsite efficiency

Specifications Table:

Specification Details
Diameter 9/16 inch
Length 4 inch
Material Steel
Grade 8 (USS)
Finish Heat-treated yellow dichromate
Head Type Hex cap with washer face
Thread Type Coarse, partially threaded shank
Pieces per Package 25
Packaging Type Boxed
Brand Hillman

Frequently Asked Questions (FAQ):

Q: What size are these bolts?
A: Each bolt is 9/16 in. diameter and 4 in. length, partially threaded.


Q: What thread type do they use?
A: They have coarse machine threads (USS).


Q: Are these suitable for high-stress applications?
A: Yes. They are Grade 8, heat-treated steel designed for high-strength fastening.


Q: Do they include nuts or washers?
A: No. This package includes only the hex head cap screws.


Q: How many are in the package?
A: 25 screws per retail package.


Industrial Strength, Polished Precision

These Grade 8 cap screws bring an elegant order to the unseen structure of your projects, fusing rigor with refinement. The hex head silhouette and washer-faced design feel intentional—clean, engineered, and confident. Style them with blackened steel brackets or oiled oak to underscore a modern, utilitarian narrative. Consider them the quiet luxury of hardware: purposeful, enduring, and impeccably made.


Choose Hillman Grade 8 cap screws for dependable, high-torque fastening that elevates every 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: 91208721423

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4.3 ★★★★★
Based on 13 reviews
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Product Reviews
A
Alley Cat on a Homestead
Waukegan, US
★★★★★ 5
Excellent Quality, Great Value, Great Look. Highly Recommend
Very well-made, there are some minor imperfections in the cuff sewing that aren't really noticeable when on. Liner is quality, color is spot on, and it fits true to size. If you're in the market for a toddler blazer and pants, you can't go wrong with this one in terms of quality, price, and the cut is perfect for a very polished look. There were a few loose strings to be clipped, but everything was correctly sewn and well. None of them affected the seam strength. The pants have a button and elastic on the waistband to make adjusting the waist size easier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
A
Amazon Customer
Grantham, US
★★★★★ 5
Great boys slim fit suit for weddings, church, or special events
Color: Medium Grey, Size: 12
Great kids suit. Comes with a jacket, pants, and tie. Does not have a shirt. Fits as expected. Classic cut on the lapels. Great quality materials. Well made pants and jacket. The color is consistent without any fade or dark spots that can happen with lower quality fabrics. Looks great on. My son loves it. Says it is not restrictive, he can move easily in it. Highly recommend for church, special events, weddings, etc.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2025
M
Mommynificent
Massapequa, US
★★★★★ 5
Nice high-quality, light weight suit for a tween!
Color: Navy Blue, Size: 10
This is such an attractive suit for a tween boy! My son loves dressing up, and this is his new favorite suit. He really likes the double-breasted style and the light weight of the fabric so that it isn't too hot. The tie that came with it gives major Harry Potter vibes which we weren't expecting, but he has lots of other ties that he also enjoys pairing with it. The size seems right, and it fits him well. He says it is very comfortable. I'm happy with the quality and the navy color.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2025
A
A. Beauto
Bozeman, US
★★★★★ 5
Stylish and great value!
Color: Medium Grey, Size: 14
This grey suit was a great find for a school ceremony and will definitely be used again. The neutral color makes it easy to pair with different shirts and ties, and it has a modern, clean-cut look. The jacket and pants fit nicely after a quick press, and the quality was better than I expected for the price. It lost a star only because the waist on the pants needed a slight adjustment, but overall, we’re very happy with it!
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Reviewed in the United States on October 10, 2025
N
N. Hale
New York, US
★★★★★ 3
Runs big, and fabric may not be same color as picture
Color: Medium Grey, Size: 16, Color: Medium Grey, Size: 16
This suit was a good find for us, as we usually dress up for church, and my 13 yo son often wears suits. He normally wears a size 16, so that’s what we ordered, and in dark charcoal gray. The suit we got was a light, heathered gray that didn’t look much like the one in the picture. It was very wrinkly and thin, and a little scratchy. Also, the sleeves were way too long and the torso cut of the jacket was pretty wide. The pants were very large in the waist, but fit him decently in the length (he’s 5’4” and weighs 90 lbs). Overall the suit looked like it was drowning him, so I would order a size down unless you have a larger child/teen. Because of the ill fit, I haven’t had the chance to see what the suit looks like on him as it’s supposed to, but I guess I’ll return it or wait a year or two until he fills it out a bit more. Not overly impressed with the quality, so I’m not sure I’d pay $55 for this one again.
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Reviewed in the United States on October 20, 2025

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