Skip to main content
AmericanaPetLawn & GardenTruck & AutomotiveClothingPoultryHeating & CoolingHorseSporting GoodsOutdoor Power EquipmentFencing & GatesLivestockOutdoor LivingPet & Animal PharmacyToolsHome ImprovementFarm & RanchBoots & ShoesTrailers & TowingHome Decor & FurnitureWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Flash Sale, In-Store and Online now through Sunday

|
Shop Now
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​

Sign In / Enroll

Get rewarded!


A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Home Improvement
  4. /
  5. Hardware
  6. /
  7. Fasteners
  8. /
  9. Bolts
  10. /
  11. Hex Bolts
  12. /
  13. Hillman 5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

  1. Home
  2. /
  3. /
  4. Hex Bolts

Hillman 5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

Shop all Hillman
Hillman 5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

Item # 328040599

Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all Hillman
Hillman 5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

Item # 328040599

Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
Image showing  5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
​

Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

The Hillman 5/16 in.-18 x 2-1/2 in. Stainless Hex Cap Screws are perfect for most applications in which a stronger, sturdier bolt is desired. A common feature on hex cap screws is a washer surface directly under the head which creates a better seal. Available in a 2-pack.

Looking for more information on nuts, bolts and washers? Check out our guide on fasteners in the product documents section.

  • Stainless steel hex cap screws feature 5/16 in. -18 coarse thread; measure 2-1/2 in. in length
  • This hex cap screw is part of the Hillman Deep Drawer program
BrandHillman
Country of OriginImported
Bolt Diameter5/16 in
Drive StyleHex
Head StyleHex
Fastener Length2-1/2 in
Head Diameter5/16 in
Measurement StandardSAE
Package Quantity2
PlatingStainless steel
Primary MaterialSteel
Product Weight0.615 lb.
Threads Per Inch18
Thread TypeCoarse
WarrantyNone
Manufacturer Part Number881764

Similar Items

  1. Hillman 5/16 in.-18 x 3/4 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 3/4 in. Stainless Hex Cap Screws, 2-Pack

    $3.29
  2. Hillman 5/16 in.-18 x 1-1/4 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 1-1/4 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
  3. Hillman 5/16 in.-18 x 3 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 3 in. Stainless Hex Cap Screws, 2-Pack

    $4.49
  4. Hillman 5/16 in.-18 x 1-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 1-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
  5. Hillman 5/16 in.-18 x 2 in. Stainless Hex Cap Screws, 2-Pack
    4.0 out of 5 stars with 1 reviews
    4.0 (1)

    Hillman 5/16 in.-18 x 2 in. Stainless Hex Cap Screws, 2-Pack

    $4.29
  6. Top Rated
    Hillman 5/16 in.-18 x 4 in. Stainless Hex Cap Screws
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 5/16 in.-18 x 4 in. Stainless Hex Cap Screws

    $4.29
  7. Hillman 5/16 in.-18 x 1 in. Stainless Hex Cap Screws, 3-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 1 in. Stainless Hex Cap Screws, 3-Pack

    $3.99
  8. Hillman 1/2 in.-13 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/2 in.-13 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $6.79
  9. Hillman 3/8 in.-16 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 3/8 in.-16 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $5.29
  10. Hillman 1/4 in.-20 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/4 in.-20 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
  11. Hillman 1/4 in.-20 x 2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/4 in.-20 x 2 in. Stainless Hex Cap Screws, 2-Pack

    $3.29
  12. Hillman 1/4 in.-20 x 3 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/4 in.-20 x 3 in. Stainless Hex Cap Screws, 2-Pack

    $4.29

Items You May Like

  1. Hillman 5/16 in.-18 x 3 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 3 in. Stainless Hex Cap Screws, 2-Pack

    $4.49
  2. Top Rated
    Hillman 5/16 in. Diameter Stainless Steel Split Lock Washers, 5-Pack
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 5/16 in. Diameter Stainless Steel Split Lock Washers, 5-Pack

    $3.79
  3. Hillman 5/16 in. 18 TPI Stainless Steel Hex Nuts, 5 pk.
    4.0 out of 5 stars with 1 reviews
    4.0 (1)

    Hillman 5/16 in. 18 TPI Stainless Steel Hex Nuts, 5 pk.

    $3.29
  4. Hillman 5/16 in.-18 x 2 in. Stainless Phillips Oval-Head Machine Screws, 5-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 2 in. Stainless Phillips Oval-Head Machine Screws, 5-Pack

    $5.79
  5. Top Rated
    Hillman 5/16 in. Stainless Steel Flat Washers, 5 pk.
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 5/16 in. Stainless Steel Flat Washers, 5 pk.

    $2.99
  6. Hillman 5/16 in.-18 x 2 in. Stainless Hex Cap Screws, 2-Pack
    4.0 out of 5 stars with 1 reviews
    4.0 (1)

    Hillman 5/16 in.-18 x 2 in. Stainless Hex Cap Screws, 2-Pack

    $4.29
  7. Hillman 1/4 in. 20 x 3in. Stainless Phillips Oval-Head Machine Screws, 5 pk.
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/4 in. 20 x 3in. Stainless Phillips Oval-Head Machine Screws, 5 pk.

    $6.79
  8. Hillman 1/4 in.-20 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/4 in.-20 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
  9. Top Rated
    Hillman 3/8 in.-16 x 3 in. Stainless Hex Cap Screws, 2-Pack
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 3/8 in.-16 x 3 in. Stainless Hex Cap Screws, 2-Pack

    $5.29
  10. Hillman 3/8 in.-16 x 4 in. Stainless Hex Cap Screws
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 3/8 in.-16 x 4 in. Stainless Hex Cap Screws

    $4.29
  11. Top Rated
    Hillman 5/16 in. 18 x 2-1/2in. Zinc-Plated Full-Thread Hex Bolts, 3 pk.
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 5/16 in. 18 x 2-1/2in. Zinc-Plated Full-Thread Hex Bolts, 3 pk.

    $3.29
  12. Top Rated
    Hillman 5/16 in. 18 x 2in. Zinc-Plated Full-Thread Hex Bolts, 3 pk.
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 5/16 in. 18 x 2in. Zinc-Plated Full-Thread Hex Bolts, 3 pk.

    $3.29

Customers Also Bought

  1. Hillman 5/16 in.-18 x 3/4 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 3/4 in. Stainless Hex Cap Screws, 2-Pack

    $3.29
  2. Hillman 5/16 in.-18 x 1-1/4 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 1-1/4 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
  3. Hillman 5/16 in.-18 x 1-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 1-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
  4. Hillman 5/16 in.-18 x 3 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 3 in. Stainless Hex Cap Screws, 2-Pack

    $4.49
  5. Hillman 5/16 in.-18 x 2 in. Stainless Hex Cap Screws, 2-Pack
    4.0 out of 5 stars with 1 reviews
    4.0 (1)

    Hillman 5/16 in.-18 x 2 in. Stainless Hex Cap Screws, 2-Pack

    $4.29
  6. Hillman 5/16 in.-18 x 1 in. Stainless Hex Cap Screws, 3-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/16 in.-18 x 1 in. Stainless Hex Cap Screws, 3-Pack

    $3.99
  7. Top Rated
    Hillman 5/16 in.-18 x 4 in. Stainless Hex Cap Screws
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Hillman 5/16 in.-18 x 4 in. Stainless Hex Cap Screws

    $4.29
  8. Hillman 1/2 in.-13 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/2 in.-13 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $6.79
  9. Hillman 9/16 in.-18 x 2-1/2 in. Yellow Grade 8 Hex Cap Screws
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 9/16 in.-18 x 2-1/2 in. Yellow Grade 8 Hex Cap Screws

    $4.79
  10. Hillman 5/8 in.-18 x 2-1/2 in. Yellow Grade 8 Hex Cap Screws
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 5/8 in.-18 x 2-1/2 in. Yellow Grade 8 Hex Cap Screws

    $4.79
  11. Hillman 3/8 in.-16 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 3/8 in.-16 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $5.29
  12. Hillman 1/4 in.-20 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Hillman 1/4 in.-20 x 2-1/2 in. Stainless Hex Cap Screws, 2-Pack

    $3.79
Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.