Skip to content
Shop Your Local Store ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted Authentic Brands

Arrow Monel T50 3/8 in. W X 1/2 in. L 18 Ga. Flat Crown Heavy Duty Staples 1000 pk

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Copper-nickel construction stands up to moisture and weather where regular staples would rust.
Arrow MPN 508M1 In Stock & Ready to Ship
$209.95
$41.99 each · sold by the case of 5 Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days
Cases of 5 · Order in multiples of 5

Sold by the Case

$209.95 per case of 5

Save $31.50 on orders $75+. Spend $75 or more to unlock 15% off every case — applied automatically at checkout. Free shipping at $75.

Ships as a complete case of 5. Free shipping on orders $75 and up.

About Product Overview

Monel staples solve a problem plain steel can't: corrosion. Made from a copper-nickel alloy, these Arrow T50-series staples hold up in damp, humid, or outdoor conditions where standard staples would rust and stain the work - think boat upholstery, outdoor fabric, screen doors, or anything exposed to weather and moisture over time.

Sized for the Arrow T50 Heavy Duty Staple Gun, each 1/2" leg length staple has an 18-gauge wire and a flat, 3/8" wide crown for solid holding power without splitting thin materials. They come boxed 1000 to a package, made in the USA, so you've got a steady supply on hand for repeat jobs like insulation, screening, upholstery, and general fastening work where long-term durability matters more than saving a few cents on fasteners.

  • Gauge: 18
  • Length: 1/2 inch
  • Material: Copper/Nickel (Monel)
  • Crown Type: Flat, 3/8 inch wide
  • Package Count: 1000 staples
  • For Use With: Arrow T50 Heavy Duty Staple Gun

The Details Specifications

Brand Arrow
Model / MPN 508M1
UPC 079055805120
Weight 4 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to price-check us against Amazon, Home Depot, and Lowe's. Everybody does. Good — open all three tabs. We'll wait. Then look hard at what you're actually being handed over there.

On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Arrow. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Arrow

Or skip the tabs entirely and buy it down the street. Find a store near you →

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare