SKU: 21631217766

Hillman 3/4 in. Dia x 2-1/2 in. L Heat Treated Zinc Steel Hex Head Cap Screw, 20-Pack

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Description

Hillman 3/4 in. Dia x 2-1/2 in. L Heat Treated Zinc Steel Hex Head Cap Screw, 20-PackHeat Treated Zinc Steel Hex Head Cap Screw, 3 4 in. x 2 1 2 in. Durable hex head cap screws from Hillman, crafted from heat treated zinc steel for strength and corrosion resistance. Sized at 3 4 in. diameter by 2 1 2 in. length, this 20 pack is ideal for heavy duty fastening in construction, machinery, and repair projects. Key Features: Heavy Duty Strength: Heat treated steel delivers reliable tensile performance for demanding applications Corrosion

Heat-Treated Zinc Steel Hex Head Cap Screw, 3/4 in. x 2-1/2 in.

Durable hex head cap screws from Hillman, crafted from heat-treated zinc steel for strength and corrosion resistance. Sized at 3/4 in. diameter by 2-1/2 in. length, this 20-pack is ideal for heavy-duty fastening in construction, machinery, and repair projects.


Key Features:

  • Heavy-Duty Strength: Heat-treated steel delivers reliable tensile performance for demanding applications
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust in indoor and covered outdoor uses
  • Precise Fit: 3/4 in. diameter and 2-1/2 in. length provide consistent alignment in structural assemblies
  • Hex Head Design: Compatible with standard wrenches for strong, controlled torque
  • Convenient Value Pack: 20 screws included for efficient stocking and project continuity

Specifications Table:

Specification Details
Diameter 3/4 in.
Length 2-1/2 in.
Head Type Hex Head
Material Steel
Treatment Heat Treated
Finish Zinc
Pack Quantity 20
Manufacturer Hillman Group Rsc
Item Model Number 200414

Frequently Asked Questions (FAQ):

Q: What tools are needed to install these screws?
A: Use a compatible wrench or socket sized for a 3/4 in. hex head cap screw; torque to project specifications.


Q: Are these suitable for outdoor use?
A: The zinc finish offers basic corrosion resistance; for harsh outdoor environments, consider galvanized or stainless options.


Q: Do these require pre-drilled holes?
A: Yes—install into properly sized, pre-tapped or nut-fastened holes matching the 3/4 in. diameter and thread pitch.


Q: Can they be used with power tools?
A: Yes, with a socket driver; apply controlled torque to avoid over-tightening.


Q: What comes in the package?
A: A pack of 20 heat-treated zinc steel hex head cap screws sized 3/4 in. diameter by 2-1/2 in. length.


Industrial Poise in a Polished Zinc Finish

These hex head cap screws bring a crisp, utilitarian elegance to hardware details, pairing strength with a bright zinc sheen. The clean geometry of the hex head punctuates joinery with confident precision. Style them in exposed, industrial-inspired fixtures or custom furniture where hardware becomes part of the narrative. A refined essential that anchors luxury with honest materials and meticulous function.


Secure your build with Hillman’s heat-treated zinc cap screws—add this 20-pack to your toolkit 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: 21631217766

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4.2 ★★★★★
Based on 23 reviews
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G
Verified Purchase
Gummy Roach
Los Angeles, US
★★★★★ 5
Very easy to use
Size: 12 Pairs / 24 pcs
I have an Onkyo audio/video receiver along with an Emotiva amplifier. Both have speaker "post" terminals which will accept banana plugs, OR I can connect the speaker wires by unscrewing the posts, poke the speaker wires into the terminals and then tighten the posts. The problem with poking the wires into the terminals and tightening the posts vs using banana plugs is that there is a risk of the wires touching the metal on the back of the chassis or touching other speaker wires, causing a short if one is not careful. With banana plugs, they simply plug into the back/top of the posts, eliminating the rsick of a short circuit. They can also be unplugged very easily if needed. Banana plugs are DEFINITELY the preferred way to connect speakers to an receiver or amplifier if they have post-style terminals. These particular banana plugs came in a package of 12 I believe. They were very reasonably priced, and simple to connect to the end of the speaker wires. Simply unscrew the banana plugs, use a small, standard jewelry screwdriver and loosen both of the set screws, insert the speaker wire, then tighten the set screws, and then screw the banana plug back together. The plugs have either a red band which would typically be used for your "Right" speakers, or a black band which would typically be used for the "left" speakers. The banana plugs insert into the top or front of the speaker terminal posts on the amp and receiver. They fit VERY snug, and so I did have to apply just a little bit of pressure in order to insert them into the posts, but once plugged in, rest assured they're not going anywhere. They are snug. I highly recommend these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2025
F
Verified Purchase
Frank from Baltimore
Fort Morgan, US
★★★★★ 5
Well made, a solid connection.
Size: 6 Pairs / 12 pcs
I liked them. They really lock down on the speaker wire to make a firm connection. They seem well made and are easy to install. My system sounds great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
M
Verified Purchase
Micky
Los Angeles, US
★★★★★ 5
Works as intended
Size: 12 Pairs / 24 pcs
These banana plugs are quite easy to use, and securely connected my speaker cables to the receiver. They have a quality feel as well.
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Reviewed in the United States on July 27, 2025
E
Verified Purchase
Eric Doka
Birmingham, US
★★★★★ 5
Solid product
Size: 12 Pairs / 24 pcs
High quality. Good connectivity.
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Reviewed in the United States on June 1, 2026
M
Verified Purchase
Matt B.
Boise, US
★★★★★ 1
Tips broke in the binding post
Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
UPDATE: Two tips broke off when unplugging them from the binding post and are now lodged in. Inexcusable and an utterly poor product. Solid connection in the binding post with no wobble or wiggle. They require some force to insert into the binding post, but once they're in they remain snug. I also tried removing and reinserting a few times and the connection remained solid. I've used other plugs in the past that have a softer tip and easily deform after one or two insertions. These do not have that issue.
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Reviewed in the United States on January 11, 2026

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