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CRAFTSMAN Hammer, 20 oz Fiberglass General Purpose (CMHT51399)

4.8 out of 5 stars 1,524 ratings
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$14.99 with 25 percent savings
List Price: $19.95
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Purchase options and add-ons

Brand Craftsman
Head Material Fiberglass
Handle Material Fiberglass
Color Red, Black
Item Weight 20 Ounces

About this item

  • Overstrike protection for added durability where fiberglass handles are most prone to break
  • Overmold grip for improved grip during use
  • Driving and pulling nails
  • Full Lifetime Warranty, refer to "Warranty & Support" section below for full details

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This item: CRAFTSMAN Hammer, 20 oz Fiberglass General Purpose (CMHT51399)
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Product information

Technical Details

Brand ‎Craftsman
Head Material ‎Fiberglass
Handle Material ‎Fiberglass
Color ‎Red, Black
Item Weight ‎20 Ounces
Head Style ‎Flat
Style ‎Hammer Only
Global Trade Identification Number ‎00885911570718
Manufacturer ‎CRAFTSMAN
UPC ‎885911570718
Part Number ‎CMHT51399
Item Weight ‎1.25 pounds
Product Dimensions ‎12.75 x 6 x 1.38 inches
Country of Origin ‎China
Item model number ‎CMHT51399
Item Package Quantity ‎1
Included Components ‎(1) 20oz. Fiberglass Hammer
Batteries Included? ‎No
Batteries Required? ‎No

Additional Information

ASIN B07RBD7XZD
Customer Reviews
4.8 out of 5 stars 1,524 ratings

4.8 out of 5 stars
Best Sellers Rank #2,603 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#2 in Claw Hammers
Date First Available May 1, 2019

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF 112 KB]

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CRAFTSMAN Hammer, 20 oz Fiberglass General Purpose (CMHT51399)


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Product Description

The 20oz. CRAFTSMAN fiberglass hammer is built for durability against overstriking with an added protective portion where most fiberglass hammers break. This added feature will give the hammer a longer life and added durability for frequent use.

Top Brand: CRAFTSMAN

Highly Rated
100K+ customers rate items from this brand highly
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100K+ orders for this brand in past 3 months
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CRAFTSMAN Hammer, 20 oz Fiberglass General Purpose (CMHT51399)
CRAFTSMAN Hammer, 20 oz Fiberglass General Purpose (CMHT51399)
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Price-25% $14.99
List:$19.95
-13% $17.49
List:$19.99
$22.99$18.55$12.38-19% $15.42
List:$18.99
Delivery
Get it as soon as Wednesday, Apr 23
Get it as soon as Wednesday, Apr 23
Get it as soon as Thursday, Apr 24
Get it as soon as Wednesday, Apr 23
Get it as soon as Wednesday, Apr 23
Customer Ratings
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head material
head style
handle material
grip type
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Customer reviews

4.8 out of 5 stars
1,524 global ratings

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Customers say

Customers find this hammer to be a top-notch Craftsman tool that gets the job done, with a well-made construction and good weight that's heavy enough to do the work. They appreciate its comfort, value for money, balance, and smart-looking design, with one customer noting the bright color makes it harder to lose. The hand fit receives mixed feedback, with some customers saying it fits their hand well while others mention the handle is a bit short.

AI-generated from the text of customer reviews

39 customers mention "Hammer quality"39 positive0 negative

Customers find this hammer to be of good quality, getting the job done effectively.

"...20 oz Fiberglass Hammer is tough, reliable, and well-balanced, perfect for DIYers, professionals, and anyone who occasionally needs to whack things..." Read more

"Great hammer, I use it for DIY jobs around the house that require a slight heavier hammer...." Read more

"GREAT HAMMER, PUT IT TO USE RIGHT AWAY" Read more

"Well made and works as a hammer should..." Read more

23 customers mention "Build quality"23 positive0 negative

Customers praise the hammer's build quality, noting it is well-made and tough, with one customer specifically mentioning the excellent construction of the grip and shaft.

"...The CRAFTSMAN 20 oz Fiberglass Hammer is tough, reliable, and well-balanced, perfect for DIYers, professionals, and anyone who occasionally needs to..." Read more

"Sturdy and balanced with a good amount of weight" Read more

"Well made and works as a hammer should..." Read more

"It was a craftsman so great, however, I had to return it because for me, as a senior lady, it was very heavy...." Read more

20 customers mention "Weight"16 positive4 negative

Customers appreciate the hammer's weight, with one noting it feels great in hand and another mentioning its well-balanced design.

"...✅ Heavy Enough to Do the Work, Light Enough to Not Destroy Your Wrist – At 20 ounces, it’s got enough weight to drive nails like a beast, but you wo..." Read more

"Sturdy and balanced with a good amount of weight" Read more

"My husband likes the handle & weight of it." Read more

"...It’s nice and heavy, and Craftsman, can’t do better than that." Read more

9 customers mention "Comfort"9 positive0 negative

Customers find the hammer comfortable, with one mentioning its ergonomic design and cushioning.

"...✅ Fiberglass Handle = Less Vibration, More Comfort – Unlike old-school wooden hammers that make your hands feel like they’ve been in a street fight,..." Read more

"...Very ergonomic and the bright color makes it harder to lose." Read more

"Feels good in the hands, hasn't slipped out of my hands yet but has slipped out of the tool lanyard." Read more

"Well built. Comfortable. Great value for the money. Pleasure to use. You won't be disappointed...Unless you are Thor..." Read more

9 customers mention "Value for money"9 positive0 negative

Customers find the hammer to be a great value, with one mentioning it is strong for the price.

"Good product great price couldn't find these prices anywhere else highly recommend." Read more

"Strong for the price" Read more

"Great price. Great hammer." Read more

"Great value." Read more

8 customers mention "Balance"8 positive0 negative

Customers find the hammer well-balanced.

"...The CRAFTSMAN 20 oz Fiberglass Hammer is tough, reliable, and well-balanced, perfect for DIYers, professionals, and anyone who occasionally needs to..." Read more

"Sturdy and balanced with a good amount of weight" Read more

"Strong and well balanced 👌..." Read more

"This hammer has great balance and does everything a hammer should do. I highly recommend." Read more

8 customers mention "Design"8 positive0 negative

Customers like the hammer's design, finding it smart looking and nice, with one customer noting that its bright color makes it easier to spot.

"...Very ergonomic and the bright color makes it harder to lose." Read more

"Nice hammer. I bought it as an extra hammer to keep in the garage." Read more

"Nice. Smacks nails." Read more

"...It’s nice and heavy, and Craftsman, can’t do better than that." Read more

7 customers mention "Hand fit"4 positive3 negative

Customers have mixed opinions about the hammer's hand fit, with some finding it comfortable while others note that the handle is shorter than expected.

"I love this hammer. It fits my hand, and is easy to swing. I am a DYer, so it works great for me." Read more

"4 stars because the handle is little bit shorter than my other hammer" Read more

"This hammer has a slimmer handle which fits my hand perfectly. I love it!" Read more

"...The handle, especially with the flared grip end, is shorter than even the 16 oz EastWing and shorter yet compared to the 20 oz EastWing which is..." Read more

Good weight, very compatible
5 out of 5 stars
Good weight, very compatible
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Top reviews from the United States

  • Reviewed in the United States on March 25, 2025
    If you’re looking for a hammer that gets the job done without making you question your life choices, the CRAFTSMAN 20 oz Fiberglass Hammer is it. Whether you’re building, demolishing, or just angrily pounding things into submission, this hammer delivers.
    Why It’s a Winner:

    ✅ Heavy Enough to Do the Work, Light Enough to Not Destroy Your Wrist – At 20 ounces, it’s got enough weight to drive nails like a beast, but you won’t feel like you did arm day at the gym afterward.
    ✅ Fiberglass Handle = Less Vibration, More Comfort – Unlike old-school wooden hammers that make your hands feel like they’ve been in a street fight, this fiberglass handle absorbs shock like a pro.
    ✅ Claw End That Actually Works – Need to yank out a nail from a questionable DIY project? This claw doesn’t bend, slip, or make you swear excessively.
    ✅ Built Like It Means Business – This hammer feels solid, well-balanced, and ready to last longer than your commitment to that weekend project.
    Minor Annoyances (Because Nothing Is Perfect)

    ❌ Doesn’t Swing Itself – Unfortunately, manual effort is still required. No self-hammering technology… yet.
    ❌ Too Nice for Just Smashing Things – If you’re looking for a pure destruction tool, this might actually be too well-crafted for reckless demolition.
    Final Verdict:

    The CRAFTSMAN 20 oz Fiberglass Hammer is tough, reliable, and well-balanced, perfect for DIYers, professionals, and anyone who occasionally needs to whack things with authority.

    ⭐⭐⭐⭐⭐ Would hammer again. 🔨
    2 people found this helpful
    Report
  • Reviewed in the United States on January 9, 2025
    Sturdy and balanced with a good amount of weight
    2 people found this helpful
    Report
  • Reviewed in the United States on February 14, 2025
    Great hammer, I use it for DIY jobs around the house that require a slight heavier hammer. Very ergonomic and the bright color makes it harder to lose.
    One person found this helpful
    Report
  • Reviewed in the United States on March 5, 2025
    GREAT HAMMER, PUT IT TO USE RIGHT AWAY
    One person found this helpful
    Report
  • Reviewed in the United States on December 23, 2024
    Well made and works as a hammer should...
    One person found this helpful
    Report
  • Reviewed in the United States on September 24, 2024
    4 stars because the handle is little bit shorter than my other hammer
    One person found this helpful
    Report
  • Reviewed in the United States on January 8, 2025
    Good product great price couldn't find these prices anywhere else highly recommend.
    One person found this helpful
    Report
  • Reviewed in the United States on March 25, 2025
    Excellent

Top reviews from other countries

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  • pr7
    5.0 out of 5 stars Martillo
    Reviewed in Mexico on September 11, 2024
    Excelente producto,resistente excelente material,cómodo al empuñar.
    Report
  • robert gagnon
    5.0 out of 5 stars Solidité
    Reviewed in Canada on December 12, 2024
    Bricollage
  • Monsieur le Matou
    5.0 out of 5 stars it hits the spot
    Reviewed in Canada on December 7, 2024
    good weight good balance.
  • Excelente . Material de primera y muy practica. Excelente calidad precio/calidad.
    5.0 out of 5 stars Super precio calidad
    Reviewed in Mexico on June 5, 2024
    Muy equilibrado. Y super barato .
    Customer image
    Excelente . Material de primera y muy practica. Excelente calidad precio/calidad.
    5.0 out of 5 stars
    Super precio calidad

    Reviewed in Mexico on June 5, 2024
    Muy equilibrado. Y super barato .
    Images in this review
    Customer image
  • BG789
    5.0 out of 5 stars Great hammer
    Reviewed in Canada on November 3, 2024
    No issues so far