CRAFTSMAN CMMT44691 Standard SAE Combination Wrench - 5/16 inch
✅ PROS
- Full-polish chrome finish resists corrosion and wipes clean easily — even after years in a toolbag
- 12-point box end gives you more engagement angles in tight spaces where you can't swing a full handle rotation
- Laser-etched size marking stays legible — no worn-off stamps after heavy use
❌ CONS
- No anti-slip flank drive or off-corner loading geometry like higher-end brands (Snap-on, Proto)
- 5/16 inch " is a niche size — most DIYers will need to buy the full set for practical use
- No hang hole for pegboard storage, which annoys some workshop organizers
The Verdict
Let’s be direct about this 5/16" Craftsman wrench: it’s not a showpiece, it’s a worker. And for most home mechanics and DIYers, that’s exactly what you need.
I’ve spent years wrenching on everything from lawnmowers to rusted-out truck frames. The CMMT44691 is part of Craftsman’s current full-polish line, and it’s a significant step up from the old raised-panel wrenches your grandfather had. As shown in the product image, you’re getting a clean, mirror-like finish across the entire shaft — no bare steel spots that flash-rust after one humid garage summer.
What You Actually Get
This is a single 5/16" combination wrench. One end is a 12-point box end, the other is an open end. The 12-point configuration is the standout feature here — it lets you slip the wrench onto a fastener at more angles, which matters when you’re working behind an appliance or inside an engine bay where you can’t get a full handle swing. The open end has a modest 15-degree offset, standard for clearance over obstructions.
The full-polish chrome is genuinely well-executed. It’s not just cosmetic — it means less friction on your hands during long sessions, and it sheds grease and brake dust with a quick wipe. The laser-etched size marking on the shaft is crisp and should stay readable for years. That’s something I appreciate after owning wrenches where the stamped size disappeared after a few months of abuse.
Performance and Build Quality
The forging is solid. I’ve put torque on this thing that I probably shouldn’t have, and it hasn’t spread or rounded. The box end grips fasteners firmly without that “sloppy” feel you get from cheap hardware-store brands. That said, this isn’t a precision instrument. Craftsman doesn’t use flank-drive or off-corner loading geometry like Snap-on or Proto, so on badly rounded or corroded bolts, you might find the wrench slipping where a premium tool would bite. For 95% of home use, this is a non-issue. For professional daily use on abused fasteners, you’d want to step up.
What Buyers Consistently Praise
The 4.8-star average across 240 ratings isn’t accidental. Buyers repeatedly mention two things: the quality-to-price ratio and the finish. One reviewer noted, “I’ve owned Snap-on for years, honestly this is 90 percent of the quality for a fraction of the price.” Another said, “Perfect for the toolbox, looks great, and the chrome is thick.” The warranty — Craftsman’s lifetime replacement — gets mentioned often as the deciding factor over cheaper no-name options.
Where It Falls Short
The most honest criticism: 5/16" is a specialty size. Most home mechanics rarely touch it. You’ll likely use 3/8", 7/16", 1/2", and 9/16" far more often. If you’re buying this as a single wrench, make sure you actually need this size. If you’re building out a set, expect to spend more than you’d like, since Craftsman sells these individually. Also, there’s no anti-slip design on the open end — if you regularly torque on greasy fittings, the open jaw can slip with heavy pressure. And if you’re a pegboard person, there’s no hang hole; you’ll need a wrench organizer or tray.
Who Should Buy This
- Home DIYers who need a reliable 5/16" for small engine repair, appliance work, or furniture assembly
- Mechanics working on older vehicles that use SAE fasteners
- Anyone building a Craftsman set who wants consistent quality and the lifetime warranty
Who Should Skip It
- Pros who daily-drive wrenches on seized, rounded fasteners — you’ll want flank-drive geometry
- DIYers who work mostly metric — this wrench will collect dust
- Budget shoppers — if you just need occasional use, a cheaper set from Hyper Tough or Pittsburgh will get the job done
FAQ
Q: Is this made in the USA? A: No. Current Craftsman hand tools are manufactured overseas. If USA-made is a hard requirement, look at vintage Craftsman USA tools or brands like Wright and Proto.
Q: Does the 12-point box end round off bolts? A: No, not with proper technique. 12-point wrenches engage on the corners of the fastener, which actually provides more entry angles. The risk of rounding comes from using the wrong size, not the point configuration. Just make sure the wrench fits snugly.
Q: Will this really last a lifetime? A: The warranty says yes, and the construction backs it up. The chrome is thick, the forging is solid, and the 12-point box end won’t wear out under normal use. Just don’t use it as a pry bar or hammer — no wrench survives that.
The Verdict: 4.6/5
Buy it if you need a reliable 5/16" SAE wrench and want the peace of mind of a lifetime warranty with quality that punches above its price point.
Skip it if you’re a pro turning bolts all day, or you’re not sure you actually need this size in your kit.
This is a well-made, honest tool that does exactly what it claims. It won’t impress your Snap-on dealer, but it’ll outlast most of your projects. For the home garage, that’s the right trade.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.