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HILLMAN No. 1/4-20 in. X 6 in. L Combination Round Head Zinc-Plated Steel Machine Screws 100 pk
HILLMAN No. 1/4-20 in. X 6 in. L Combination Round Head Zinc-Plated Steel Machine Screws 100 pk

HILLMAN No. 1/4-20 in. X 6 in. L Combination Round Head Zinc-Plated Steel Machine Screws 100 pk

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

For dependable, long-lasting connections in metal assemblies, the Hillman No. 1/4-20 x 6 in. Combination Round Head Steel Machine Screws are built to perform. This 100-pack boxed s…

Hillman MPN 90434 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $48.99. Our online price is $53.99.
$53.99
Includes free shipping on orders over $75 · $8.99 standard below
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About Product Overview

For dependable, long-lasting connections in metal assemblies, the Hillman No. 1/4-20 x 6 in. Combination Round Head Steel Machine Screws are built to perform. This 100-pack boxed set teams durable zinc-plated steel with a versatile combination drive, giving you a practical, ready-to-use solution for a wide range of projects—from shelving and enclosures to brackets and equipment mounts.

Why this screw stands out

  • Coarse 1/4-20 thread provides solid grip in tapped holes and standard nuts, delivering reliable seating in a variety of metal-to-metal applications.
  • 6 in. length offers deep reach for thicker assemblies, giving you flexibility when mounting through multiple components or thicker panels.
  • Round head with zinc-plated finish combines a clean, professional appearance with corrosion resistance suitable for indoor and outdoor settings.
  • Combination drive accepts multiple bit types, simplifying installation when your tool set is varied. Note: driver bit is not included.
  • Versatile, boxed 100-pack ensures you have an ample supply for ongoing projects, repairs, or shop inventory, without frequent trips to the store.
  • Not self-drilling or self-tapping—requires a pre-drilled pilot hole or threaded engagement, which helps prevent push-through and maintains precise alignment for critical assemblies.

Specifications at a glance

  • Brand: Hillman
  • Size / Thread: 1/4-20
  • Length: 6 in
  • Head type: Round
  • Material: Steel
  • Finish: Zinc-Plated
  • Drive style: Combination (slotted/Phillips compatibility)
  • Self-drilling: No
  • Self-tapping: No
  • Applications: Indoor and outdoor use with nuts or tapped holes
  • Count: 100 per box

Use cases — where these screws really shine

  • Mounting brackets to metal framing in storage systems, machinery housings, or equipment enclosures.
  • Attaching components to stamped or machined metal panels where a strong, clean finish is desired.
  • Securing hardware in DIY projects that require a long, sturdy fastener through multiple metal layers.
  • Repairs and replacements for shop-built shelving, workbenches, or electronics racks that rely on durable machine screws.

Practical tips for best results

  • Pair these screws with compatible nuts or tapped holes to create secure, load-bearing joints.
  • Use washers when fastening through softer materials or where surface load distribution matters.
  • Since they’re not self-drilling, pre-drill holes with an appropriately sized bit to prevent thread damage and ensure alignment.
  • Choose the correct length for your stack-up; 6 in. is ideal for assemblies where multiple components require a deep, clean bite.
  • Store and organize the 100-pack in a labeled box for quick access during ongoing projects.

The Details Specifications

Brand Hillman
SKU 5304365
UPC 008236060171
Unit 0
Case Pack Quantity 2 per case
Retail Unit Quantity 1
Unit of Measure 100 BX
Dimensions (L × W × H) 7 × 5 × 3
Weight 7 lbs
Cubic Feet 0.1016 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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