SKU: 5709274414

Hillman 5/16 in. Diameter x 1 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-Pack

Sale price$27.89 Regular price$30.99
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Description

Hillman 5/16 in. Diameter x 1 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 100-PackHillman Grade 5 Hex Head Cap Screws, 5 16" x 1", 100 Pack Durable grade 5 hex head cap screws made from heat treated zinc coated steel for strong, wear resistant fastening. Sized 5 16 in. diameter by 1 in. length, partially threaded for versatile use in tapped holes or with a nut. Ideal for general construction, automotive, and machinery projects. Key Features: Heat Treated Strength: Grade 5 steel construction enhances tensile strength and durability

Hillman Grade 5 Hex Head Cap Screws, 5/16" x 1", 100-Pack

Durable grade 5 hex head cap screws made from heat-treated zinc-coated steel for strong, wear-resistant fastening. Sized 5/16 in. diameter by 1 in. length, partially threaded for versatile use in tapped holes or with a nut. Ideal for general construction, automotive, and machinery projects.


Key Features:

  • Heat-Treated Strength: Grade 5 steel construction enhances tensile strength and durability
  • Corrosion-Resistant Finish: Zinc coating helps resist rust and wear in demanding environments
  • Washer Face Design: Built-in washer face under the head improves sealing and load distribution
  • Versatile Fastening: Partially threaded shank for use with nuts or tapped holes; tightens with wrench or drill
  • Bulk Value Pack: 100 screws per box to tackle multiple jobs and restock the shop

Specifications Table:

Specification Details
Brand Name Hillman
Material Steel
Finish Heat Treated Zinc
Grade SAE Grade 5
Diameter 5/16 inch
Length 1 inch
Head Type Hex head with washer face
Thread Type Fine
Unit of Measurement SAE
Number in Package 100 pack
Packaging Type Boxed
Package Dimensions 4.5 in W x 3.5 in L x 2 in H
Package Weight 3.1 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are grade 5 screws with a partially threaded shank.


Q: What tools do I need to install them?
A: Tighten using a wrench or a drill with the appropriate hex socket.


Q: Will the zinc finish prevent rust?
A: The zinc coating provides good corrosion resistance for many environments, though harsh exposure may still require additional protection.


Q: What thread type do these screws use?
A: Fine-thread SAE specification.


Q: Can these be used as standard hex bolts?
A: Yes, they function as hex bolts for applications requiring a hex head fastener.


Sleek Utility with Industrial Confidence

These zinc-steel cap screws bring refined industrial polish to any build, marrying resilience with clean geometry. The hex head’s washer face adds a subtle, purposeful detail while amplifying performance. Style them with matte black brackets or brushed hardware to create a cohesive, modern fastening story. A must-have for achieving elevated, durable design from workshop to living space.


Secure your projects with reliable, corrosion-resistant strength—add this 100-pack of Hillman grade 5 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: 5709274414

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4.3 ★★★★★
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Product Reviews
F
Verified Purchase
Frances
Houston, US
★★★★★ 5
It did work
Size: 1-Pack (32 oz)
Sealed a small nail hole in a front tractor tire. Better than taking to shop for inside patch or making the 3x bigger for a rope patch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
J
Verified Purchase
Jim
Phoenix, US
★★★★★ 5
Fixed a Bead Sealing Issue
Size: 1-Gallon (128 oz)
For traction in snow, I recently installed new "agricultural" style lugged front tires on a Simplicity garden tractor from around 1980. The tractor looks like it's survived a war, evidently having had a hard life as a workhorse owned by a school district. The front rims are rusty, and I naively thought the beads of these thick tires would seal properly anyway. They didn't. The jug of sealant ships with a valve core removal tool. Removing and reinstalling the cores is a piece of cake if you've never done it. I pumped a generous amount of the product into each tire and then did a few fast laps in a grassy paddock. It's a Kohler 19HP twin and it's a bit of a rocket. 😎 One tire sealed, the other didn't, and there was still a faint hiss. I added more product to that side and repeated the process. It seemed to hold. The next day that side was flat again, so I added more sealant and this time it held. Based on this experience, I'd say that instead of strictly following what the instructions recommended as an amount per tire, keep adding product in increments until the tire holds air. It's good stuff and it works. Will the tire self-heal if I puncture it? I don't know yet. It saved me the headache of having to remount these small tires or install tubes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
S
Verified Purchase
shimshong
Draper, US
★★★★★ 5
Stop wasting your money on green slime or Fix-A-Flat or any of the other tire sealant
Size: 1-Gallon (128 oz)
Flat out is by far the best product on the market to fix flat tires and prevent flat tires. This will be the second gallon jug that I purchased that stuff on everything. all of my landscape equipment has it in every tire. And to paint and even better picture for you I have a scag mower that is 20 years old The tires are probably 18 years old ugly as could be and would not hold air until I put the flat out in it it has been sitting now for over a year and every tire still has air That's how good the stuff is. Don't just buy one gallon by two cuz it will get used
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 11, 2025
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 5
John Deere 5x4 (gator)
Size: 4-Pack (128 oz), Size: 4-Pack (128 oz)
Excellent product. The John Deere 5x4 (Gator) in picture sat for ten years, the tires were flat, the front tire was the worse. To move this Gator from my neighbors place he had to load it on a trailer, he aired up the rear 4 tires but the front would air up and leak before he could move it. He put a make do wheel to get it moved to my place. shortly after unloading the rear 4 tires went flat. All were badly weathered. I read about a stop leak "FLATOUT" I ordered one bottle and put it in the front wheel and I aired it up, it held air for several hours. I called FLATOUT Support and told them I put 1/2 bottle in front tire and how it helped, He said it calls for a full bottle per tire so I added the rest of the FLATOUT. I bought four more bottles of FLATOUT and put those in all 4 tires, put air in and drove the unit a block. next day two tires were low so I finished putting FLATOUT in and aired the tires and drove two to three blocks. the weather snowed so I parked the Gator for two weeks, the tires never went flat. I checked the air pressure and had lost about 2-3 pounds, refilled with air and on a warm day drove the Gator about 2 miles. No flat tires. Note the front tire had a weathered crack 4 inches long where it sat folded for so many years and I saw where this product had sealed this leak and no air loss after two weeks of sitting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2021
R
Verified Purchase
R. Arminio
Bozeman, US
★★★★★ 5
Recommended
Works extremely well for tire patch repairs. Just be sure product is totally dry before applying patch on inner tube or interior of tubeless tire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026

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