Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
  1. Deal Image
Item 1 of 2
  1. Deal Image
  2. Deal Image
Item 1 of 2
expiredphoinix | Staff posted Mar 6, 2026 7:25 PM

Century Drill & Tool 1/2-20 NF Right Hand Rethreading Die

$3.20

$7.99

59% off
Amazon
9 Comments
8.2K Views
Visit Amazon
Deal Details
Amazon has Century Drill & Tool 1/2-20 NF Fractional Right Hand Rethreading Die (92910) on sale for $3.19. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Hunter phoinix for sharing this deal.

Details:
  • Precision thread repair: Restores and cleans damaged threads on bolts/studs without removing excessive material; salvages hardware quickly and efficiently
  • Protects original thread integrity: Unlike cutting dies, it avoids crosscutting or undercutting, preserving thread profile and strength
  • Repair-only use: Designed solely for fixing worn/damaged threads; not suitable for cutting new threads or hardened steel/fasteners
  • Durable high-carbon alloy steel: Built for exceptional strength, wear resistance, and long-term reliability in repeated use
  • Ideal for mechanics & technicians: Essential tool for automotive, construction, and general maintenance/repair tasks

Editor's Notes

Written by SaltyOne | Staff

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Century Drill & Tool 1/2-20 NF Fractional Right Hand Rethreading Die (92910) on sale for $3.19. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Hunter phoinix for sharing this deal.

Details:
  • Precision thread repair: Restores and cleans damaged threads on bolts/studs without removing excessive material; salvages hardware quickly and efficiently
  • Protects original thread integrity: Unlike cutting dies, it avoids crosscutting or undercutting, preserving thread profile and strength
  • Repair-only use: Designed solely for fixing worn/damaged threads; not suitable for cutting new threads or hardened steel/fasteners
  • Durable high-carbon alloy steel: Built for exceptional strength, wear resistance, and long-term reliability in repeated use
  • Ideal for mechanics & technicians: Essential tool for automotive, construction, and general maintenance/repair tasks

Editor's Notes

Written by SaltyOne | Staff

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+23
Good Deal
Visit Amazon

Top Comments

AquaIdea9357
785Comments
38Reputation
This is only for rethreading damaged right-hand threads, not to put new threads on harded steel. Other sizes available. Some at similar prices or much higher than this price. 4.5 to 5.0 customer rating. Seems like a decent repair tool. Century drill & tool company, est'd 1940.
Go to Comment

Join The Conversation

Share information with the community. Please follow our Community Guidelines and be kind!

9 Comments

Sign up for a Slickdeals account to remove this ad.

Mar 9, 2026 4:04 AM
785 Comments
Joined Jun 2023
AquaIdea9357Mar 9, 2026 4:04 AM
785 Comments

Our community has rated this post as helpful. If you agree, why not thank AquaIdea9357

This is only for rethreading damaged right-hand threads, not to put new threads on harded steel. Other sizes available. Some at similar prices or much higher than this price. 4.5 to 5.0 customer rating. Seems like a decent repair tool. Century drill & tool company, est'd 1940.
Last edited by AquaIdea9357 March 8, 2026 at 09:07 PM.
2
Mar 9, 2026 4:25 AM
710 Comments
Joined Dec 2012
litesdsdMar 9, 2026 4:25 AM
710 Comments

Our community has rated this post as helpful. If you agree, why not thank litesdsd

1/2"-20 is not a common thread size. 1/2-13 is the common 1/2" thread size people commonly see. 1/2-20 is the fine thread variant of 1/2" threads. 1/2-20 is not very useful size for most people but the price is good.
2
2
Mar 9, 2026 4:26 AM
1.1K Comments
Joined Jan 2012
skoal2007Mar 9, 2026 4:26 AM
1.1K Comments
Review complained "the photo shows a die stamped "JAPAN". The thing I got isn't stamped"
Mar 9, 2026 4:32 AM
710 Comments
Joined Dec 2012
litesdsdMar 9, 2026 4:32 AM
710 Comments
Quote from AquaIdea9357 :
This is only for rethreading damaged right-hand threads, not to put new threads on harded steel. Other sizes available. Some at similar prices or much higher than this price. 4.5 to 5.0 customer rating. Seems like a decent repair tool. Century drill & tool company, est'd 1940.
Good point. Carbon steel dies are usually a rolled thread and only good for chasing threads. A High Speed Steel (HSS) die usually has ground threads and are capable of cutting new threads from round stock. Now that you pointed this out I'd say the price is not good for a single rolled thread die. Harbor Freight sells tap and die sets that would be a much better value with more common sizes.
1
Mar 9, 2026 6:26 AM
46 Comments
Joined Oct 2025
SplendidPartner5042Mar 9, 2026 6:26 AM
46 Comments
Pop would probably like this for his shop.
Mar 9, 2026 6:28 AM
189 Comments
Joined Nov 2003
cueball13Mar 9, 2026 6:28 AM
189 Comments
Quote from litesdsd :
1/2"-20 is not a common thread size. 1/2-13 is the common 1/2" thread size people commonly see. 1/2-20 is the fine thread variant of 1/2" threads. 1/2-20 is not very useful size for most people but the price is good.
Not a bad deal if you specifically need 1/2"-20, but as litesdsd points out it's not a super common size. If you need something to have around the shop for the occasional stripped bolt, better off getting one of the many thread chasing kits on the market that'll have most of the common sizes.
Mar 9, 2026 9:33 AM
313 Comments
Joined Jun 2025
informed-consumerMar 9, 2026 9:33 AM
313 Comments
Used a similar metric one for impact gun damaged exh. flange studs. Seemed to work pretty well , but some of the new replacement nuts went on with some binding even though I greased the studs. I was concerned about removing material and/or additional damage that a threading die might cause. Paid like $8 for a m10 x 1.25 . Pretty sure it was from the U.S. mfr.

Sign up for a Slickdeals account to remove this ad.

Mar 9, 2026 2:32 PM
17.7K Comments
Joined Nov 2003
deshwasiMar 9, 2026 2:32 PM
17.7K Comments
Quote from cueball13 :
Not a bad deal if you specifically need 1/2"-20, but as litesdsd points out it's not a super common size. If you need something to have around the shop for the occasional stripped bolt, better off getting one of the many thread chasing kits on the market that'll have most of the common sizes.
Any recommendations for a kit at home?
Mar 10, 2026 9:07 PM
199 Comments
Joined Oct 2011
jen7851Mar 10, 2026 9:07 PM
199 Comments
Picture is wrong, its showing your standard hex die which century makes in japan and can cut threads. Check the link and look at all the other sizes, its clearly shows the correct picture for the much cheaper thread chasing dies which dont cut threads and century makes in china.

Join The Conversation

Share information with the community. Please follow our Community Guidelines and be kind!

Related Searches

Home & Home ImprovementToolsAmazon

Popular Deals

See All
Found by phoinix
Yesterday 7:38 AM
Forum Thread
[AC] $4.99* | Febreze Plug Scent Booster Air Freshener at Amazon$4.99$9.94
49% off
1
Found by Eragorn
Jul 21, 2026 4:15 AM
Forum Thread
16-Piece Scotch Sliders Furniture Moving Kit $7.66 + Free S&H w/ Walmart+ or on $35+$7.66$22
65% off
1
Found by Eragorn
Jul 24, 2026 11:58 PM
Forum Thread
KennelMaster Welded Wire Dog Kennel with Waterproof Cover (8' L x 4' W x 6' H) $151.53 + Free Shipping$152$379
59% off
1
Found by serra
Jul 23, 2026 1:57 PM
Forum Thread
Round Trip Dallas to Manila Philippines $849 Airfares on EVA Air with 2 Free Checked Bags (Limited Travel September - April 2027)$849$940
9% off
1
Found by VioletHaddock489
Yesterday 11:17 PM
Forum Thread
Banana Republic Factory: Up to 50% Off Everything + Extra 40% Off Your Purchase + Extra 50% Off Clearance $12.49$12$100
88% off
2

Trending Deals

See All
Found by flycanada
Yesterday 10:47 PM
Forum Thread
New Samsung Galaxy Z Fold8 (wide) $655 after trade-in, Papal discount, and education discount$655$1,900
65% off
21
Found by cvp33
Yesterday 7:23 PM
Forum Thread
Refurbished electric bicycle 26" eb7pro peak 6000w dual motor 52v 32ah battery $1149$1,149$1,859
38% off
6
Found by phoinix
Yesterday 8:58 PM
Forum Thread
[SnS, AC] $38.60* | 4.6-Lb MuscleTech Platinum 8-Hour Protein Powder (Milk Chocolate) at Amazon$39$70
44% off
4
Found by Gregory00
Yesterday 9:04 PM
Forum Thread
Frigidaire 7.5 Cu. ft. Top Mount Refrigerator, Apartment Size Fridge with Reversible Doors, Platinum $218$218$499
56% off
3
Found by earthdogmonster
Yesterday 7:43 PM
Forum Thread
Dave and Busters - 7/29 only 50 cent boneless wings and $1 bone-in wings$0.50
7