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Model #WBS4

Store SKU #504475

4 in. One-Way Screws for Security Bar Window Guard (4-Pack)

  • Helps to install Grisham window bar mounting brackets
  • Compatible with most security applications resisting tampering
  • Non-reversing design restricts removal by intruders
  • See More Details

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Product Overview

The Grisham 4 in. one-way screw (4-pack) features a black powder-coated finish for weather durability. For use with all Grisham spearpoint window bar mounting brackets or fastener applications where possible tampering could occur. The non-reversing safety screw design inhibits removal of the fastener.
  • For use in fastening all Grisham window bar mounting brackets and accessories
  • Can be used in many security applications to inhibit potential tampering
  • Non-reversing design impedes removal
  • Rust-resistant finish
  • 4-pack of x 4 in. long by 5/16 in. Dia with a 5/8 in. round head

Info & Guides

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Specifications

Details

Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 year limited

Questions & Answers

4Questions6Answers

Does this screw work for fastening to a masonry (brick) wall? If so, does it require any kind of ...

Asked by arkper January 2, 2021
1
Answer

Arkper, Can use the screw with or without an anchor in masonry. Thank You, Grisham Bros.

which size drove the hole for screw?

Asked by jz June 13, 2018
2
Answers

I drove screw through 1/4" hole on security screens.

Why is a driver not included and where and what size driver do you have to purchase???????????

Asked by WILLIAM May 1, 2016
2
Answers

Because if you ordered 20 4-pack of screws, as I did, would you want 20 drivers? #14 driver; socket type works best.

Do you need a special tool to drive them and what is the diameter of the actual screw

Asked by Bruce April 28, 2016
1
Answer

Yes; #14

Customer Reviews

  • 2.8
    out of 5 reviews
  • 50% recommend this product
Filter by:
Showing 1-5 of 5 reviews
Well I received four screws for the window bars but...
Well I received four screws for the window bars but for the gate I only received two it should’ve been six so you get one star
by LENNOX
by WILLIAM
What Bit!?
No where on here anywhere does it say you need a special bit for this item. So upset. Just stay away from it. The bars bend too on the actual item.
by Sarah
I was unable to use them because we needed a...
I was unable to use them because we needed a special bit.
by HomeDepotCustomer
1 person found this helpful
Worked like one would expect this one-way screw to work.
Worked like one would expect this one-way screw to work.
by NSK
Showing 1-5 of 5 reviews