SKU: 28555173865

Hillman 5/16 in. Diameter x 5-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-Pack

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Description

Hillman 5/16 in. Diameter x 5-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 50-PackHillman Grade 5 Hex Head Cap Screws, 5 16 in. x 5 1 2 in., 50 Pack These Hillman Grade 5 hex head cap screws provide reliable fastening strength for automotive, machinery, and construction projects. Made of heat treated steel with a zinc finish, they feature a washer face under the head and coarse threads for secure assembly. Key Features: Grade 5 Strength: Heat treated steel provides higher tensile strength for demanding applications Corrosion

Hillman Grade 5 Hex Head Cap Screws, 5/16 in. x 5-1/2 in., 50-Pack

These Hillman Grade 5 hex head cap screws provide reliable fastening strength for automotive, machinery, and construction projects. Made of heat-treated steel with a zinc finish, they feature a washer face under the head and coarse threads for secure assembly.


Key Features:

  • Grade 5 Strength: Heat-treated steel provides higher tensile strength for demanding applications
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
  • Washer Face Head: Integrated bearing surface under the hex head improves load distribution and sealing
  • Coarse Thread Design: Ideal for quick assembly and strong hold in tapped holes or with nuts
  • Bulk Contractor Pack: 50-pack for efficient stocking and project savings

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 5-1/2 inch
Material Steel
Finish Heat-treated zinc
Grade 5 (USS)
Head Style Hex head with washer face
Thread Type Coarse
Threading Partially threaded along shank
Units Imperial
Number in Package 50 pack
Packaging Type Boxed
Package Dimensions (L x W x H) 6.8 in x 4.5 in x 3.3 in
Package Weight 6.8 lb

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank (Grade 5 USS style).


Q: What tools are needed for installation?
A: Tighten using a wrench or driver/socket sized for a 5/16 in. hex cap screw with the appropriate nut and washer.


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance suitable for many indoor and some sheltered outdoor uses; for harsh environments, consider galvanized or stainless options.


Q: What thread type do these screws have?
A: They use coarse threads (USS).


Q: What is included in the package?
A: A boxed 50-pack of 5/16 in. diameter x 5-1/2 in. length hex head cap screws.


Industrial polish with steadfast purpose

Clean-lined and quietly authoritative, these hex cap screws bring a refined industrial cadence to custom builds. The zinc finish offers a subtle gleam, while the crisp washer-faced head delivers a tailored, architectural detail. Pair them with matte black hardware for a chic, mechanical contrast or let them punctuate raw woods for modern utility. A small but essential flourish, they anchor craftsmanship with effortless sophistication.


Stock up on Hillman Grade 5 hex cap screws today for strong, reliable fastening that keeps projects moving.

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: 28555173865

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LOUIE POOP
Draper, US
★★★★★ 5
Better than expected
Style: dog ball launcher
Sick love it nice and longer than expected !!! Good quality durable material also .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
R
Verified Purchase
Ray Jorgenson
Pawtucket, US
★★★★★ 1
Terrible product
Style: dog ball launcher
Terrible design. With most dog ball launchers, swinging your arm like you're throwing a baseball results in a long arching trajectory of the ball, just as expected. The same arm motion with this launcher results in the ball flying straight up. To get the ball to even move forward requires an un-natural forward snap of the wrist, and even then it doesn't travel far. Hasn't anyone tried this out before hitting the market?
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Reviewed in the United States on April 12, 2026
B
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Bob Conner
Fort Morgan, US
★★★★★ 5
Great product
Style: dog ball launcher
Very easy to use, assemble and disassemble. Saves my arm a lot. Unfortunately once my dog runs to the ball she gets side tracked and I have to fetch it. 🫤 I highly recommend this product.
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Reviewed in the United States on April 3, 2026
A
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Amazon Customer
Houston, US
★★★★★ 4
Fun day in the park
Style: dog ball launcher
My puppy loves it
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Reviewed in the United States on April 29, 2026
D
Verified Purchase
donald m hebert sr.
San Leandro, US
★★★★★ 5
My wife uses it more
Style: dog ball launcher
My dog loves it she can run father
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Reviewed in the United States on April 1, 2026

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