SKU: 48064158664

Hillman 5/16 in. Diameter x 3/4 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screw, Fine Thread, 100-Pack

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Description

Hillman 5/16 in. Diameter x 3/4 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screw, Fine Thread, 100-PackHillman Grade 5 Hex Head Cap Screws, 5 16 in. x 3 4 in., 100 Pack These Hillman Grade 5 hex head cap screws are heat treated zinc plated steel for dependable strength and wear resistance. Sized 5 16 in. diameter by 3 4 in. length with fine threads, theyre ideal for fastening into tapped holes or use with nuts in automotive, machinery, and general construction projects. Key Features: Durable Grade 5 Steel: Heat treated zinc finish resists wear and

Hillman Grade 5 Hex Head Cap Screws, 5/16 in. x 3/4 in., 100-Pack

These Hillman Grade 5 hex head cap screws are heat-treated zinc-plated steel for dependable strength and wear resistance. Sized 5/16 in. diameter by 3/4 in. length with fine threads, they’re ideal for fastening into tapped holes or use with nuts in automotive, machinery, and general construction projects.


Key Features:

  • Durable Grade 5 Steel: Heat-treated zinc finish resists wear and corrosion
  • Hex Head Design: Washer face under head provides a better seal and load distribution
  • Fine Thread: Partially threaded shank offers strong hold in metal assemblies
  • Versatile Use: For tapped holes or paired with nuts; tighten with wrench or drill
  • Bulk Pack Value: 100 screws for shop, jobsite, or maintenance stock

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 3/4 inch
Material Steel
Finish Heat-treated zinc
Grade Grade 5
Thread Type Fine
Threading Partially threaded shank
Head Type Hex head with washer face under head
Unit of Measurement SAE
Number in Package 100 pack
Packaging Type Boxed
Tightening Method Use wrench or drill/driver
Category Hex Bolts
Package Dimensions (L x W x H) 3.4 in x 3.5 in x 2 in
Package Weight 2.6 lbs

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are Grade 5 screws that are partially threaded along the shank.


Q: What thread type do they use?
A: Fine thread.


Q: What tools are recommended for installation?
A: Tighten with a wrench or a drill/driver and the appropriate hex socket.


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


Q: What size are these screws?
A: 5/16 inch diameter by 3/4 inch length.


Industrial polish in a precise, compact fastener

The clean geometry of a hex cap screw brings a tailored order to utility—streamlined, purposeful, quietly strong. Here, the heat-treated zinc sheen adds a subtle luminosity, a refined note against raw wood or cool steel. Style them with matte-black hardware and brushed metal accents to echo their crisp, engineered profile. Consider this your small-but-mighty essential for projects that demand durability with a disciplined aesthetic.


Stock up on these Grade 5 fine-thread cap screws today for reliable, ready-to-go fastening on every project.

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: 48064158664

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Odin M Turner
Chelsea, US
★★★★★ 4
Good product
Model: 36 SqFt(3.4 SqM)
Easy to roll out. Works great  Why did you pick this product vs others?: Fair price for the amount of coverage, good quality  Works well: Easy to install, rolls out great. Forms to contours well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
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BRIAN HEATH
Belleville, US
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
T
Verified Purchase
TimtheK
Chelsea, US
★★★★★ 5
Great product - Add foam product for complete solution
Model: 36 SqFt(3.4 SqM)
Used in two cars with speaker upgrades. Easy to install but get the roller for assured adhesion.removes "tinnyness" from large metal resonators. Use with foam absorptive material for a complete system.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
T
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TitothePinkTorpedo
Fort Morgan, US
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
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Reviewed in the United States on December 29, 2025
K
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Kev
Bozeman, US
★★★★★ 5
Makes For Quiet Rides
Model: 10 SqFt(0.95 SqM)
Comparable quality and performance to name brand competitor. It sticks on strong, easy to apply, and does make a difference in sound reduction. Turn your hollow shell sounding vehicle panels into solid sounding walls.
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Reviewed in the United States on March 15, 2026

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