SKU: 95159193898

Hillman 3/8-16 x 1-1/4 in. Stainless Steel Hex Head Cap Screws, 50-Pack

Sale price$33.29 Regular price$36.99
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Description

Hillman 3/8-16 x 1-1/4 in. Stainless Steel Hex Head Cap Screws, 50-PackStainless Steel Hex Cap Screw, 3 8 16 x 1 1 4 in (50 Pack) Durable 18 8 stainless steel hex head cap screws designed for high torque fastening in corrosive environments. Coarse 3 8 16 threading ensures strong hold; ideal for use with nuts or tapped holes across marine and outdoor projects. Key Features: Corrosion Resistant Stainless: 18 8 stainless steel resists rust for marine and outdoor use High Torque Hex Head: Hex cap design and machine threads

Stainless Steel Hex Cap Screw, 3/8-16 x 1-1/4 in (50-Pack)

Durable 18-8 stainless steel hex head cap screws designed for high-torque fastening in corrosive environments. Coarse 3/8-16 threading ensures strong hold; ideal for use with nuts or tapped holes across marine and outdoor projects.


Key Features:

  • Corrosion-Resistant Stainless: 18-8 stainless steel resists rust for marine and outdoor use
  • High-Torque Hex Head: Hex cap design and machine threads support secure tightening
  • Coarse 3/8-16 Thread: Compatible with standard USS hardware for reliable engagement
  • Pack Convenience: 50 screws per package for larger projects and replenishment
  • Versatile Use: Install in tapped holes or with matching nuts and washers

Specifications Table:

Specification Details
Material 18-8 stainless steel
Head Type Hex cap
Thread Size 3/8-16 USS (coarse)
Length 1-1/4 inch
Threading Partially threaded shank
Pieces per Pack 50
Installation Pre-drilling recommended; use with nut or in tapped hole

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They feature a partially threaded shank with coarse 3/8-16 machine threads.


Q: Can these be used in marine environments?
A: Yes, the 18-8 stainless steel offers strong corrosion resistance suitable for marine and outdoor applications.


Q: Do I need to pre-drill?
A: Pre-drilling to match the bolt diameter is recommended for easiest installation.


Q: What length are these screws?
A: 1-1/4 inch length, sized 3/8-16 thread.


Q: How many pieces are included?
A: 50 screws per retail package.


Polished Strength for Clean, Modern Assemblies

The quiet sheen of 18-8 stainless brings a tailored precision to any build, lending a refined, architectural edge. The hex cap profile is crisp and confident, a subtle accent that feels intentional. Pair with stainless washers and nuts for a cohesive hardware story across cabinetry, outdoor fixtures, or custom furniture. It’s the elegant, hard-working detail that elevates everyday luxury.


Choose Hillman stainless hex cap screws for reliable, corrosion-resistant fastening that looks as good as it performs.

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: 95159193898

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TitothePinkTorpedo
Boise, US
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
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Reviewed in the United States on December 29, 2025
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Mike
Fort Morgan, US
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
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Reviewed in the United States on December 3, 2025
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Paul
Cuba, US
★★★★★ 5
Excellent sound deadening mats
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
Purchased these for a 2020 Lexus RX350 due to the hollow sound of the car doors when shutting. They sounded cheap. The mats are super sticky and I applied them when the doors were hot from sitting in the sun. They alubutyl sticks like crazy and the end result was perfect. Now I have solid sounding doors. Good quality product.
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Reviewed in the United States on May 20, 2026
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Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Awesome product 👌
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
I love this stuff. I use it alot. Sticks great Easy to use Molds super easy Really helps with sound. Great product. I wish I could get sponsored for this product on my projects..
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Reviewed in the United States on April 30, 2026
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john l fields
Charlottesville, US
★★★★★ 5
Good product at a good price
Style: 80 mil 36 sqft
This product works great and easy to install. I do two or more vehicles a month. I switch to this brand a year ago and would recommend to everyone of my customers
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Reviewed in the United States on April 16, 2026

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