I purchased the dcd998b hammer drill. when using it and i release the trigger, there is a loud clunking sound. is this normal?

Not sure your meaning "clunking". There is a sound where the device is using the rotational energy to transfer back to the battery. It makes a noise during this braking time. This is mostly heard when the drill is not driving (actively loaded). Try actually drilling/driving something and see if the sound goes away (resistance to drilling or driving will stop the bit). If the noise persists, there may be something wrong.

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DEWALT 20V MAX Hammer Drill & Driver, Cordless, Tool Only (DCD998B)

Product ID: 336593872

Details

Amperage
8 Amps
Brand
DEWALT
Maximum Rotational Speed
78000 rph
Power Source
Battery
Voltage
20

⚡57% more runtime with brushless motor

💡20x brighter 3-mode LED spotlight

🔧3-speed all-metal transmission for precision

E£ 34351

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Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power through projects with DEWALT’s unstoppable 20V MAX Hammer Drill!

ROCK SOLID BIT GRIP - Heavy-duty 1/2-inch ratcheting nitro-carburized chuck with carbide inserts ensures superior bit retention under pressure.
PRECISION MEETS SPEED - 3-speed all-metal transmission optimizes performance for every task, from delicate drilling to heavy masonry.
NEXT LEVEL BATTERY TECH - POWERDETECT technology with 20V MAX 8Ah battery boosts power output by 29% and runtime by 60%, so you never slow down.
ILLUMINATE EVERY JOBSITE - 3-mode LED spotlight is 20x brighter than previous models, with a smart 20-minute shutoff to save battery in dark spaces.
UNMATCHED POWER EFFICIENCY - Brushless motor delivers up to 57% more runtime, keeping you working longer without interruptions.

The DEWALT 20V MAX Hammer Drill & Driver (DCD998B) is a cordless, brushless powerhouse designed for professionals who demand efficiency and durability. Featuring a 3-speed all-metal transmission, a heavy-duty 1/2-inch ratcheting chuck with carbide inserts, and a 3-mode LED spotlight 20 times brighter than previous models, it delivers superior performance on masonry and metal. Integrated POWERDETECT technology maximizes output and runtime when paired with high-capacity 20V MAX XR batteries, making it the ultimate tool for fast, precise, and long-lasting drilling.

Specifications

ASIN	B097GCMZ21
Additional Features	Brushless Motor
Amperage	8 A
Battery Capacity	8 amp_hours
Battery Type	Lithium-Ion
Best Sellers Rank	#134,707 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #80 in Power Hammer Drills
Brand	DEWALT
Brand Name	DEWALT
Color	Yellow
Customer Reviews	4.6 out of 5 stars 521 Reviews
Drill Type	Hammer Drill
Drilling Capacity Metal	0.5 inches
Drilling Capacity Wood	0.5 inches
Global Trade Identification Number	00885911677868
Included Components	(1) DCD998 20V MAX XR Cordless Brushless 1/2 in. Hammer Drill/Driver with POWER DETECT
Item Dimensions L x W x H	12.3"L x 8.7"W x 4.06"H
Item Type Name	Hammer Drill
Item Weight	4.8 pounds
Manufacturer	DEWALT
Manufacturer Part Number	DCD998B
Material Type	Blend
Maximum Chuck Size	0.5 inches
Maximum Power	300 watts
Maximum Rotational Speed	78000 revolutions per hour
Maximum Torque	80 N m
Model Number	DCD998B
Number of Items	1
Number of Packs	1
Number of Speeds	3
Power Source	Battery Powered
Speed	2800 rpm
Torque	59.65 ft-lb
UPC	885911677868
Unit Count	1 Count
Voltage	20

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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E£ 34351

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews