SKU: 40153301449

Hillman 1/4-20 in. Diameter x 3-1/2 in. Length Stainless Steel Hex Head Cap Screw, 50-Pack

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Description

Hillman 1/4-20 in. Diameter x 3-1/2 in. Length Stainless Steel Hex Head Cap Screw, 50-PackStainless Steel 1 4 20 x 3 1 2 in. Hex Head Cap Screws, 50 Pack These Hillman hex head cap screws deliver strong, reliable fastening with coarse machine threads for high torque applications. Made from 18 8 stainless steel, they resist corrosion and feature a washer face under the head for a secure seal. Ideal for use with a nut or tapped hole wherever a hex bolt is needed. Key Features: Corrosion Resistant Stainless Steel: 18 8 stainless steel

Stainless Steel 1/4-20 x 3-1/2 in. Hex Head Cap Screws, 50-Pack

These Hillman hex head cap screws deliver strong, reliable fastening with coarse machine threads for high torque applications. Made from 18-8 stainless steel, they resist corrosion and feature a washer face under the head for a secure seal. Ideal for use with a nut or tapped hole wherever a hex bolt is needed.


Key Features:

  • Corrosion-Resistant Stainless Steel: 18-8 stainless steel construction stands up to moisture and the elements
  • High Torque Capability: Hex cap head and coarse machine threads provide strong tightening force
  • Secure Seal: Washer face under the head helps distribute load and improve sealing
  • Versatile Use: Fits applications requiring 1/4-20 threads; use with nut or tapped hole
  • Convenient Bulk Pack: 50 pieces per retail package for jobsite or shop efficiency

Specifications Table:

Specification Details
Diameter / Thread Size 1/4-20
Length 3-1/2 inch
Material 18-8 Stainless Steel
Head Type Hex cap head
Thread Type Coarse machine threads
Threading USS partially threaded along shank
Washer Face Washer face under head for improved seal
Number in Package 50-pack
Packaging Type Boxed
Unit of Measurement Imperial
Use For use with a nut or in a tapped hole; tighten with wrench or drill
Package Dimensions (HxWxL) 2 in x 3.5 in x 4.5 in
Package Weight 3.3 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: They are USS partially threaded along the shank, with threads at the end of the fastener.


Q: What grade of stainless steel is used?
A: They are made from 18-8 stainless steel for enhanced corrosion resistance.


Q: Can I install these with a drill?
A: Yes. Tighten with a wrench or a drill fitted with the appropriate hex socket.


Q: What thread size do these screws use?
A: Coarse 1/4-20 machine threads.


Q: How many screws come in the package?
A: 50 screws per boxed retail package.


Sleek Stainless Precision for Clean, Modern Assemblies

The refined silhouette of a hex cap screw in brushed stainless offers a quiet sophistication to exposed hardware moments. Its crisp washer-faced head delivers a polished, tailored look while ensuring a secure, even hold. Style it in open-shelf brackets or contemporary furniture joints where the hardware becomes part of the design language. This stainless essential elevates everyday construction with enduring elegance.


Choose Hillman stainless hex cap screws for dependable, corrosion-resistant fastening—stock up with this 50-pack today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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: 40153301449

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4.4 ★★★★★
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Verified Purchase
Dan
San Leandro, US
★★★★★ 5
Lots of extras!
Size: 2+12+12+2 pack
The brushes are a bit flimsier than the original but otherwise fine. I needed it for the rectangular filters more than anything
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
P
Verified Purchase
Pan8ita
Draper, US
★★★★★ 5
EUFY 11S
Size: 2+8 pack
Used to replace the ones for my EUFY 11S vacuum. They fit just like the ones and got my vacuum back to cleaning really good. Didn’t realize how loud my vacuum had become until I replaced these parts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
A
Verified Purchase
Armeeda
Chelsea, US
★★★★★ 5
Get this!
Size: 3+12+12+2+1 pack
Very nice pack of essentials for my robot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
A
Verified Purchase
Alex
Phoenix, US
★★★★★ 5
Side brush screw PSA 🤪
Size: Eufy B-18Packs
Reviewing parts for Eufy L60 Review posted for some PSA When you get the brush replacement this kit comes with a tiny screw driver DO NOT USE THAT TINY SCREWDRIVER TO UNDO YOUR SIDE BRUSH IT WILL STRIP THE OEM SCREW AND MAKE IT USELESS. the screw driver included fits the screws that are about 2 mil wide the side brush screw is different. Grab a regular screw driver to undo a side brush. The main rolling brush cover is different but the rubber part still hits the floor at proper height so I don’t see a big issue there. When replacing the filter the filter cover was a little snug but I don’t see a big problem there just be aware to close the cover all the way but be careful not to push too hard so the plastic clips don’t break on the cover. Don’t forget to wipe down all the seals when installing the filter to maintain the seal integrity to keep the suction at top intensity. The dust bags seemed to be cut out with a stencil which gave the cardboard a better appearance than the oem cut out dust bags so that was interesting, dimensions were identical when comparing so I don’t anticipate any issues! Over all I’m glad we have cheaper alternative replacement parts that can be used so thank you! ❤️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2025
A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 5
Great parts replacement kit for Eufy!
Size: Eufy B-18Packs, Size: Eufy B-18Packs
This kit has made it nice keeping up with our Eufy robot vacuum. All parts were free of defect and fit as it should. Instead of replacing individual piece by piece, I now just change all of the replacement parts at one time and it’s good to go for a while! Great value. Great quality. Will definitely be buying this kit again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026

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