Hillman 5/8 in. Diameter x 6 in. Length Heat-Treated Steel Hex Head Cap Screw, 25-Pack
SKU: 17571153835

Hillman 5/8 in. Diameter x 6 in. Length Heat-Treated Steel Hex Head Cap Screw, 25-Pack

Sale price$85.49 Regular price$94.99
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Description

Hillman 5/8 in. Diameter x 6 in. Length Heat-Treated Steel Hex Head Cap Screw, 25-PackHillman 5 8 in. x 6 in. Grade 5 Hex Head Cap Screws (25 Pack) Heavy duty hex head cap screws made from heat treated steel for reliable clamping strength in structural and machinery applications. Partially threaded with a washer face under the head and a protective zinc finish for added wear resistance. Key Features: Grade 5 Strength: Heat treated steel delivers dependable tensile strength for demanding fastening jobs Partially Threaded Shank: Provides

Hillman 5/8 in. x 6 in. Grade 5 Hex Head Cap Screws (25-Pack)

Heavy-duty hex head cap screws made from heat-treated steel for reliable clamping strength in structural and machinery applications. Partially threaded with a washer face under the head and a protective zinc finish for added wear resistance.


Key Features:

  • Grade 5 Strength: Heat-treated steel delivers dependable tensile strength for demanding fastening jobs
  • Partially Threaded Shank: Provides strong shear performance with secure thread engagement
  • Washer Face Under Head: Improved bearing surface for better load distribution and sealing
  • Corrosion-Resistant Finish: Zinc-plated coating helps resist wear and rust in standard environments
  • Bulk Pack Convenience: 25-pack for project and jobsite efficiency

Specifications Table:

Specification Details
Diameter 5/8 inch
Length 6 inch
Material Steel
Finish Zinc (heat-treated)
Grade Grade 5 (USS)
Thread Type Coarse
Head Style Hex head with washer face
Threading Partially threaded shank
Number in Package 25
Packaging Type Boxed
Brand Hillman
Unit of Measurement Imperial
Package Dimensions (HxWxL) 4 in x 9 in x 4.5 in
Package Weight 14.5 lb

Frequently Asked Questions (FAQ):

Q: What size are these bolts?
A: They are 5/8 inch diameter by 6 inch length hex head cap screws.


Q: Are these fully threaded?
A: No. They are grade 5 bolts that are partially threaded along the shank.


Q: What finish do they have?
A: They feature a zinc finish on heat-treated steel to improve wear and corrosion resistance.


Q: What thread type is used?
A: Coarse thread (USS).


Q: How are they typically installed?
A: Tighten with a wrench or compatible driver; use with a matching 5/8 in coarse-thread nut and washer if needed.


Industrial polish with practical strength

These hex cap screws bring a refined, utilitarian gleam—clean zinc with a crisp, faceted head that feels intentionally architectural. I love the partially threaded shank; it keeps lines sleek while offering structural integrity. Style them with exposed hardware on a workbench or custom shelving to celebrate function as form. Consider them a quiet essential for a luxe, well-crafted space.


Equip your project with reliable Grade 5 strength—add this 25-pack to your cart and fasten with confidence.

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: 17571153835

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4.7 ★★★★★
Based on 1190 reviews
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bstu
Phoenix, US
★★★★★ 5
Great alternative to wood blocks
Size: 17" x 8.5", Color: Gray, Size: 17" x 8.5", Color: Gray
So I’ve used wood over the years to level out my Class A RV’s and even with the wood sealed, there is always one side that takes a beating. I figured I would try these Camco rectangular leveling blocks and was very surprised at their strength. I’ve only used them twice, but both times the RV rolled right up with no issues. The RV sitting on those blocks in the picture is a 40’ Tiffin diesel pusher. My only issue is the dual wheel base for this big RV, is too wide to use the blocks perpendicular to the wheels, so I had to use 3 blocks parallel (see pics) for each wheel, which required me to purchase two sets. Most sites I setup up at fairly level, but this just provides that little extra height if needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
D
Verified Purchase
dwayne rogers
Dallas, US
★★★★★ 5
compact and sturdy
Size: 8.5" x 8.5", Color: Yellow
works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
R
Verified Purchase
Richard Allen
Los Angeles, US
★★★★★ 5
Simple and easy to use
Color: Yellow, Size: 5.5" Lift
We took a late fall trip to Branson Missouri pulling our Camper. We had to use the Camco Trailer Aid when we got to our campsite and it performed as advertised. Good sturdy product that worked as advertised.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
T
Verified Purchase
Thomas Schleis
New York, US
★★★★★ 5
A Must-have for Double-axle Travel Trailers
Color: Yellow, Size: 5.5" Lift
I moved from a diesel pusher motorhome back to a truck and Lance travel trailer. ‘Done with Diesels’ is my new motto. I wanted to check the wheel bearings and couldn’t find the proper way to jack up the side. Some people said jack here, some said jack there, and some said never to use a jack at all, so I was confused. Decided to use some of my leveling blocks and build a ramp to drive up onto and that ended in failure. Either it wouldn’t go up without spitting it out and still wasn’t high enough. I resorted to jacking it up at the spot I thought was best, but wasn’t comfortable with the entire side supported with a small bottle jack cylinder. So I ordered this and it was well worth the wait. Trailer pulls right up onto it and the other tire is ready to work on. The weight is more evenly distributed and certainly feels safer. Obviously this won’t work for a single axle, but for double axles it works for maintenance and makes tire changing a breeze. It’s as good as everyone says it is and has a permanent place in my trailer storage compartment.
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Reviewed in the United States on August 15, 2024
C
Verified Purchase
Chris TeKippe
Boise, US
★★★★★ 5
Works exactly as stated with a dual axel trailer
Color: Yellow, Size: 5.5" Lift
I purchased this on a hope, I had a trip planned to pull a school trailer 2600 miles round trip and had to use my pickup truck jack if I had a tire issue. I didn't like my odds and bought this ramp hoping it would make things simpler. My second day into driving and I had my first tire blow out. The ramp workers perfectly and I had the new tire on the trailer in 15 minutes. Later in the day, I caught a second tire on the trailer down to threads and used the ramp again to change out tires at a truck stop. I analyzed all the "whys" as to what made the tires blow and fixed it to make the rest of my trip safe and trouble free but this ramp made things quick and easy when i needed it. I'd totally recommend this product and I'm planning to purchase another and leave it with the school trailers for future use. Keep in mind you need at least a dual axel trailer for this to work and have a spare tire to swap to.
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Reviewed in the United States on April 1, 2026

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