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- USA
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Flat Bottom Counterbore - SD-3 - 5/16" x 3/4"Use Snappy SD 3 Flat Bottom Counterbores to drill a pilot clearance hole and counterbore a flat bottomed hole in one step. The unique geometry of the cutters provide excellent chip clearance and cutting performance, even in hardwoods. Perfect for creating jigs using 5 16 18 bolts and WoodRiver 5 16 18 knobs. Features: Use to drill a pilot clearance hole and counterbore a flat bottomed hole in one step Perfect for lag screws, lag bolts, washer head
Use Snappy® SD-3 Flat Bottom Counterbores to drill a pilot/clearance hole and counterbore a flat bottomed hole in one step. The unique geometry of the cutters provide excellent chip clearance and cutting performance, even in hardwoods. Perfect for creating jigs using 5/16-18 bolts and WoodRiver 5/16-18 knobs.
Features:
Features:
- Use to drill a pilot/clearance hole and counterbore a flat bottomed hole in one step
- Perfect for lag screws, lag bolts, washer head screws, T-nuts & more
- Use to create jigs using 5/16-18 bolts and 5/16-18 knobs
- 3-flute flat bottom counterbore with TiN coated twist drill
- Made of thru-hardened alloy steel for long cutting life
Specifications:
- Drive Shank: 1/4″ Hex Power Bit Shank
- Drill Size: 5/16″
- Counterbore Size: 3/4″
- Finish: Titanium Nitride
- Material: Alloy Steel
What's Included:
- (1) Snappy Flat Bottom Counterbore - SD-3 - 5/16" x 3/4"
Shipping / Billing Information
This product ships direct from the manufacturer:
- Your order will ship in approximately 5 business days.
- This product is considered special order. Your account will be charged when you place your order.
- Express or overnight shipping is not available for this product.
- Ships via ground to the contiguous 48 states.
Return Information
Returns are accepted in new, resaleable condition only within 30 days of delivery. A 10% restocking fee will apply. Contact Woodcraft Customer Service at 800-225-1153 for return authorization.
Warranty Information
Snappy Tools warrants their products to be free from defects in material and workmanship. Warranty will not apply to products subject to misuse, improper operating conditions, or repaired or altered tools.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 834 reviews
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Product Reviews
★★★★★ 5
Love it
Color: Black/Blue
Have worn these watches for years.they are durable they can get wet take a beating but they keep on ticking. I’m just not a fan of watches you have to charge all the time
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Reviewed in the United States on May 11, 2026
★★★★★ 5
this is the perfect daily everyday use digital watch........
Color: Black
hands down the best edc digital watch available, this watch is everything you need at a quarter of the cost of other digital watches. we all know the durability of iron man watches its legendary, but where this watch beats even other iron man offerings is the size of the digital numbers displayed a bit larger for aging eyes and what makes it even more durable than the other iron man watch's is that the instructional labeling of the buttons is under the glass and wont fade or rub off under use making it look cleaner and newer for longer. now lets mention the size or foot print of this watch, i own several watches from competing brands and almost once a day i hit the watch on something a door knob a table corner, but when I'm wearing this Timex 40mm i never hit it on anything due to the thinness of the watch.
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Reviewed in the United States on May 11, 2025
★★★★★ 5
The Best
Color: Black
Ironman watches are the best for everyday and the price is right!
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Reviewed in the United States on January 19, 2026
★★★★★ 5
Works as expected
Color: Black
It's a Timex. Says it all...!
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Buy!
Color: Black/Negative
Great watch
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Reviewed in the United States on February 22, 2026