





🛠️ Clamp down on quality — don’t let your projects slip away!
The BESSEY CM40 is a 4-inch drop forged C-clamp built from high tensile alloy steel with a bright galvanized finish. Featuring a cold drawn steel spindle with smooth Acme threads and a swivel pad for adaptable clamping, it delivers up to 1,300 lbs of force. Designed for light general purpose, DIY, and professional tasks, this durable clamp combines precision engineering with reliable performance, making it a must-have for any serious maker or craftsman.










| ASIN | B0006694IC |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #15,521 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in C-Clamps |
| Brand | BESSEY |
| Color | Black Powder Coat |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,848) |
| Date First Available | September 30, 2004 |
| Global Trade Identification Number | 00091162000335 |
| Included Components | Bessey - CM40 |
| Is Discontinued By Manufacturer | Yes |
| Item Package Quantity | 1 |
| Item Weight | 1.43 pounds |
| Item dimensions L x W x H | 8 x 4.5 x 0.93 inches |
| Item model number | Bessey - CM40 |
| Manufacturer | Bessey |
| Material | Alloy Steel |
| Measurement System | Metric |
| Number Of Pieces | 1 |
| Part Number | CM40 |
| Product Dimensions | 8 x 4.5 x 0.93 inches |
| Size | 4 in. |
| Style | 1,300 lb Force |
| Tensile Strength | 1200 Pounds |
| UPC | 091162000335 |
G**P
Good quality for a medium duty budget priced clamp
I purchased a few of these for a project needing a moderate amout of clamping force with a 3" throat. While advertized in some places with having a 3-1/2" throat, the throat depth only measures at 3-1/4". Most budget priced C clamps are made of cast or malliable iron, which will break if over loaded. These Bessy C clamps are advertised as being made of forged steel, which is much stronger. The screw is, as expected in this proce range, to be smaller in diameter than the heavy duty Armstrong C clamps I have, but is more than adequate. It has an Acme thread which is stronger than a regular angled screw thread. LOL, I was so pleased after using them that I would have bought a few more, but after the New Year the price went up, so I think I'll get by with the ones I have for now.
L**R
The Best For Clamping
These metal clamps are so much better than the plastic jaw ones. Hubs and I were assembling a plant bench and needed some clamps to hold slats together while the wood glue dried and these worked perfectly. Both of the plastic clamps broke off. These are very durable and should last for years.
D**N
True C clamp
Very well made C clamp. I had one for over 30 years and lent it out or misplaced it. But it was made differently. It was square top and bottom. Not a true C clamp. This gives me a recess top and bottom for clearance. I had many times needed a true C clamp and had to use spacers to get clearance. Love the quality and value.
J**J
H.D. C-Clamp seems a little cheap
For being a heavy duty c clamp I really expected the threads to be more tight and that the pads would line up more centered. It’s a good quality clamp except for the thread slop. Sometimes I use them with sockets, to press things out, and when I did, the socket kept misaligning and falling off so I could not really torque it very much . Overall it’s an okay clamp, but I wouldn’t consider it to be heavy duty.
R**S
Heavy-Duty Clamp That Gets the Job Done
The BESSEY CM60 C-Clamp is built like a tank. I’ve been using it for woodworking and farm projects, and it holds strong without slipping or bending. The drop-forged frame feels solid and can take a lot of torque without twisting, and the screw mechanism threads smoothly even under heavy pressure. The 6-inch opening gives plenty of range for most clamping needs, and the black finish helps resist rust when used outdoors. I’ve used cheaper clamps before that flex or seize up — this one doesn’t. It’s a simple, no-nonsense tool that performs exactly as it should. If you want a reliable clamp that’ll last for years of shop or farm use, this is the one to get. Excellent quality for the price.
S**E
Works as advertised.
Excellent
J**D
C clamp
Best buy for this type of C clamp. Heavy construction, deep reach.
A**D
Price
Good for price
B**O
Muito bom, ótima qualidade. Vai ser muito útil para mim.
J**Y
This long reach Bessey clamp is sturdy and well built. Surprisingly so considering the price point (about $11). The jaw plate aligns perfectly with the foot of the screw (something that other clamps don't always do - looking at you Irwin...) I like it enough that I just ordered more to have on hand for those special clamping jobs in my woodworking shop. Notes: bought this from seller amazon.ca
H**E
Profundidade adequada para instalação das frentes de gavetões.
V**N
Exelenta calidad, lastima que no hay un modelo más grande
J**O
Hard to find in stores. Exactly what we needed.
Trustpilot
1 month ago
1 month ago