SKU: 25717748291

Hillman 3/8 in. Dia x 2-1/2 in. L Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

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Description

Hillman 3/8 in. Dia x 2-1/2 in. L Heat-Treated Zinc Steel Hex Head Cap Screw, 50-PackHillman 3 8 in. x 2 1 2 in. Zinc Hex Head Cap Screws (50 Pack) Durable Grade 5 hex head cap screws made from heat treated zinc plated steel for strength and corrosion resistance. Ideal for securing machinery, automotive components, and structural assemblies requiring 3 8 in. 16 coarse threads. Key Features: Grade 5 Strength: Heat treated steel provides reliable clamping force for demanding applications Corrosion Resistant: Zinc plated finish helps

Hillman 3/8 in. x 2-1/2 in. Zinc Hex Head Cap Screws (50-Pack)

Durable Grade 5 hex head cap screws made from heat-treated zinc-plated steel for strength and corrosion resistance. Ideal for securing machinery, automotive components, and structural assemblies requiring 3/8 in.-16 coarse threads.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides reliable clamping force for demanding applications
  • Corrosion Resistant: Zinc-plated finish helps protect against rust in indoor and light outdoor use
  • Standard Hex Head: Tightens with a wrench or driver for quick, secure installation
  • Coarse Thread 3/8"-16: Compatible with corresponding nuts and tapped holes
  • Contractor Pack: 50 pieces for efficient stocking and project throughput

Specifications Table:

Specification Details
Diameter 3/8 inch
Length 2-1/2 inch
Thread Size 3/8"-16
Thread Type Coarse, right-hand
Material Alloy steel
Grade Grade 5
Finish Zinc plated
Head Style Hex
Fastener Type Hexagon bolt / hex head cap screw
Measurement System Inch
Item Weight 4 lb (package)
Product Dimensions (package) 5 x 4.25 x 3.25 inches
Pack Quantity 50 pieces
Country of Origin Taiwan

Frequently Asked Questions (FAQ):

Q: What thread specification do these bolts use?
A: They are 3/8"-16 coarse thread, right-hand.


Q: Are nuts included with this pack?
A: No, nuts are not included and must be purchased separately.


Q: What grade are these cap screws?
A: They are Grade 5 heat-treated alloy steel.


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance; for harsh or marine environments, consider galvanized or stainless options.


Q: What tools are needed for installation?
A: Use a standard wrench or driver sized for the hex head to tighten into a nut or tapped hole.


Industrial Polish with Purpose

These zinc-kissed cap screws bring a quiet, engineered elegance to utilitarian builds. The crisp hex head is a subtle design note—clean, confident, and timeless. Style open shelving or exposed hardware with their silvery sheen for a refined workshop aesthetic. Essential pieces that marry function and finesse for elevated, everyday luxury.


Equip your project with dependable Grade 5 strength—add this 50-pack of Hillman hex head cap screws to your cart 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: 25717748291

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Product Reviews
J
Verified Purchase
Janie Bryson
Dallas, US
★★★★★ 5
Great gift for men who have everything for garage
Bought these as a gift for a man who has everything but these hooks. He loved them. size was perfect for garage and the magnetic strength was great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
J
Verified Purchase
Jane Gray
Boise, US
★★★★★ 5
good quality
Size: 4" - Black, Style: Open Hooks
Really strong magnets. Holds up stall cleaning forks on the trailer wall even when under way
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
A
Verified Purchase
Alexandria
Whiting, US
★★★★★ 5
Work great
Item Package Quantity: 6, Color: Black
Relatively strong hooks. The metal I have them on is thin so the magnets arent as steady as I hoped but thats my fault not the hooks. Ample hook space and solidly built
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2024
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
You need these!
Item Package Quantity: 4, Color: Black
These are not really “industrial strength” but they work great and are decent quality, especially for the price. I bought them to use on a sheet metal barn and they hold halters, rakes and other supplies with ease. Out of curiosity I did toss a dewalt drill in one and it held even though I ordered the medium size and the drill didn’t fit super well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 6, 2025
K
Verified Purchase
K. Nguyen
Los Angeles, US
★★★★★ 5
Very useful tools or helmets hanger.
These are quite useful and hold anything that’s less than 10lb. I think it can hold heavier items but I think it’s best to keep it light and the magnet strong enough to make it very convenient to affix it to any metal cabinet or poles.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2025

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