Tekton SIA13100 3/8 Inch (F) x 1/4 Inch (M) Impact Drive Reducer
4.7 (3)
$9.00
Buy the Tekton SIA13100 3/8 in. (F) x 1/4 in. (M) impact reducer online for only $9.00 and run 1/4 inch drive sockets on your 3/8 inch impact driver with impact-rated 8660 steel strength.
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Tekton SIA13100 3/8 Inch (F) x 1/4 Inch (M) Impact Reducer converts your 3/8 inch drive impact driver to accept 1/4 inch drive sockets, multiplying your socket system's range. Order online now for just $9.00, with coupon code SAVE15 for additional savings.
Specifications
Brand: Tekton
Model: SIA13100
Product Type: Impact drive reducer
Female Drive: 3/8 inch
Male Drive: 1/4 inch
Material: 8660 Ni-Cr-Mo steel
Finish: Manganese phosphate
Torque and Strength
Built from high-performing 8660 alloy steel, the SIA13100 is engineered for impact driver use. Note that any reducer can limit maximum torque transfer versus a direct-drive socket; for the highest torque jobs, use sockets matched directly to your tool's drive size. Spring-loaded detent ball and four detent grooves keep sockets locked on during use.
Compatibility
Fits 3/8 inch drive impact drivers and ratchets on the female end; accepts 1/4 inch drive sockets and accessories on the male end.
Use Cases
Running small 1/4 in. drive sockets on a larger impact driver
Expanding one socket set across multiple drive sizes
Automotive, equipment, and assembly work
Comparison and Alternatives
Choose SIA13100 to step down from 3/8 in. to 1/4 in. drive; choose SIA24103 to step up from 1/2 in. to 3/4 in. Owning both covers every common drive combination for under $20 total.
Price and Deal Value
At $9.00, this impact-rated adapter is a low-cost way to double your socket options. Stack SAVE15 and hit $45 for free shipping.
Features
Converts 3/8 inch drive impact drivers to run 1/4 inch drive sockets
Impact-rated 8660 Ni-Cr-Mo steel with manganese phosphate finish for just $9.00
Spring-loaded detent ball and four grooves lock sockets on securely at an affordable price
Model: SIA13100
Finish: Manganese phosphate
Material: 8660 Ni-Cr-Mo alloy steel
Male Drive: 1/4 inch
Female Drive: 3/8 inch
Impact Rated: Yes
Product Type: Impact drive reducer
Seller: Driven Fastener Works
MPN: SIA13100
Product Details
One Adapter, Double the Socket Options
The Tekton SIA13100 lets your 3/8 inch impact driver handle 1/4 inch drive sockets — expanding your reach into tight fasteners without buying a second tool.
Impact-Rated Construction
8660 Ni-Cr-Mo steel with a manganese phosphate finish stands up to repeated impact cycles, while the detent ball keeps sockets from dropping mid-job.
Fit Guide
Female end: 3/8 in. drive tools
Male end: 1/4 in. drive sockets and accessories
Price Value
At $9.00 — less than one replacement socket — this adapter pays for itself the first time it saves a job. Add SAVE15 and bundle to the $45 free-shipping threshold for maximum savings.
Frequently Asked Questions
What is the torque limit or max torque of the SIA13100?
Tekton engineers the SIA13100 from 8660 alloy steel for impact driver use and does not publish a numeric max torque or break strength. Like all reducers, it can limit peak torque transfer versus direct drive — use directly matched sockets for maximum-torque applications.
Where can I buy the Tekton SIA13100?
Buy it online on this page at Driven Fastener Works for the current price of $9.00.
Is it compatible with my impact driver?
Yes — it fits any 3/8 inch drive impact driver or ratchet on the female end and accepts 1/4 inch drive sockets on the male end.
Are there any coupons or deals?
Yes — apply coupon code SAVE15 for 15% off, and orders over $45 ship free.
How does it compare to the SIA24103?
SIA13100 steps down from 3/8 in. to 1/4 in. drive; SIA24103 steps up from 1/2 in. to 3/4 in. Both are $9.00 and share the same impact-rated construction.
4.7★★★★★★★★★★(3)
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Customer Reviews
3
★★★★★★★★★★5.0
w*j
Verified
Does exactly what it should
Lets me run my 1/4 inch sockets on the 3/8 impact. Steel looks beefy and it's taken months of use without any play.
★★★★★★★★★★4.0
u***e
Verified
Good little adapter
Fits snug, no wobble, no complaints for nine bucks.
★★★★★★★★★★5.0
t****i
Verified
Solid and affordable
I was skeptical about a reducer holding up under impact use, but this thing has been flawless. Stays secure under torque, releases cleanly, and shows no wear after a season of brake jobs and small engine work. Trust the Tekton name here.