SKU: 85792511067

Hillman 5/16-18 x 2-1/2 in Stainless Steel Hex Head Cap Screws, 50-Pack

Sale price$48.59 Regular price$53.99
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Hillman 5/16-18 x 2-1/2 in Stainless Steel Hex Head Cap Screws, 50-PackStainless Steel Hex Head Cap Screws, 5 16 18 x 2 1 2 in (50 Pack) Durable 18 8 stainless steel hex cap screws for hightorque fastening in tapped holes or with nuts. Coarse 5 1618 threads and partial shank threading deliver strong hold and corrosion resistance for indoor and outdoor projects. Key Features: Corrosion Resistant: 18 8 stainless steel withstands moisture and the elements High Torque Capability: Hex cap head with machine threads for secure

Stainless Steel Hex Head Cap Screws, 5/16-18 x 2-1/2 in (50-Pack)

Durable 18-8 stainless steel hex cap screws for high‑torque fastening in tapped holes or with nuts. Coarse 5/16‑18 threads and partial shank threading deliver strong hold and corrosion resistance for indoor and outdoor projects.


Key Features:

  • Corrosion Resistant: 18-8 stainless steel withstands moisture and the elements
  • High Torque Capability: Hex cap head with machine threads for secure tightening
  • Better Seal: Washer face under the head helps distribute load and improve sealing
  • Versatile Use: Partially threaded (USS) shank works in tapped holes or with nuts
  • Bulk Value: 50 screws per boxed pack for jobsite or shop needs

Specifications Table:

Specification Details
Diameter/Thread 5/16-18
Length 2-1/2 in
Material 18-8 Stainless Steel
Head Type Hex Cap
Thread Type Coarse
Partial Thread USS style (partially threaded along shank)
Washer Face Under-head washer face for better seal/load distribution
Number in Package 50
Packaging Type Boxed
Tightening Method Use wrench or drill
Unit of Measurement Listed Metric (per Ace data)
Package Dimensions (L x W x H) 4.5 x 3.5 x 2 in
Package Weight 3.3 lb
Brand Hillman

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are USS-style and partially threaded along the shank.


Q: What wrench size should I use?
A: Use a compatible hex wrench/socket sized for 5/16-18 hex cap screws; match to the fastener’s head size used in standard hardware sets.


Q: Will they resist rust outdoors?
A: Yes. The 18-8 stainless steel provides enhanced corrosion resistance suitable for outdoor and damp environments.


Q: Can I use them with power tools?
A: Yes. Tighten with a wrench or drill/driver using the correct socket or bit.


Q: What thread type is this?
A: Coarse thread, 5/16-18.


Polished Utility with Enduring Strength

These stainless hex cap screws bring a clean, refined hardware detail to cabinetry, shelving, and custom fixtures. The crisp hex head and subtle sheen feel purposeful and modern while delivering unwavering strength. Pair them with brushed steel brackets or matte black hardware for a tailored, architectural look. A small but essential element, they elevate everyday installations to a luxe, lasting finish.


Secure your projects with corrosion‑resistant strength—add this 50‑pack of Hillman stainless hex cap screws to your cart now.

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: 85792511067

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Product Reviews
J
Verified Purchase
Jacob Nicholas
Los Angeles, US
★★★★★ 5
Good buy.
Style: Tech Pack 28 sqft
Perfect amount for small suv. Easy to install once panels are off. Great product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2026
B
Verified Purchase
Bob
Louisville, US
★★★★★ 5
Passively quiet your cars interior!
Style: Tech Pack 28 sqft
This stuff is the industry standard! Does exactly what it is supposed to.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 29, 2025
J
Verified Purchase
jon r sobon
Massapequa, US
★★★★★ 5
High quality product
Style: Tech Pack 28 sqft
Great product, very easy to work with. Stopped the rattling, definitely sticks when rolled to panels.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025
M
Verified Purchase
Mary Hughes
Omaha, US
★★★★★ 3
Generally happy
Style: Tech Pack 28 sqft, Style: Tech Pack 28 sqft
Much thinner than I expected, but installation went better than I'd thought it would. Needed to line the interior of the engine cover of a Ford E450 RV. Tried nitrile gloves, but they stuck to the material so did it bare handed. Cut easily with a fresh razor blade. Pressed in place with a plastic putty knife. We'll see the effectiveness on the next trip.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 3, 2025
K
Verified Purchase
Kev
Draper, US
★★★★★ 5
Makes For Quiet Rides
Model: 10 SqFt(0.95 SqM)
Comparable quality and performance to name brand competitor. It sticks on strong, easy to apply, and does make a difference in sound reduction. Turn your hollow shell sounding vehicle panels into solid sounding walls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026

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