U Bolts: Flat and Round

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Heavy Duty 360° Seal
Guillotine Style Muffler Clamp

Due to its superior sealability and versatility the U-Series is our most popular style clamp. With the new 2007 emission standards it is more important than ever to use clamps that will get the job done. Developed and used for over 48 years the best new clamp on the market is the one you have been using for decades. These clamps provide a complete 360 deg. heavy duty seal to surpass all of your needs.
The U-Series is available in a variety of sizes,finishes and materials including 304 Stainless Steel.

Item #

Size

A

B

C

D

E

F

G

Gauge

Weight

                     
U200 2.00 in 3.10 in 2.50 in 3.67 in 1.5 in 2.17 in 0.69 in 1.89 in 13 0.45 lb
U225 2.25 in 3.35 in 2.75 in 3.79 in 1.5 in 2.42 in 0.69 in 2.00 in 13 0.50 lb
U250 2.50 in 3.61 in 3.00 in 4.05 in 1.5 in 2.67 in 0.72 in 2.14 in 13 0.53 lb
U275 2.75 in 3.86 in 3.25 in 4.29 in 1.5 in 2.92 in 0.69 in 2.25 in 13 0.56 lb
U300 3.00 in 4.11 in 3.50 in 4.54 in 1.5 in 3.17 in 0.66 in 2.37 in 13 0.60 lb
U325 3.25 in 4.34 in 3.75 in 4.79 in 1.5 in 3.42 in 0.69 in 2.50 in 13 0.65 lb
U350 3.50 in 4.61 in 4.00 in 5.04 in 1.5 in 3.67 in 0.68 in 2.69 in 13 0.72 lb
U378 3.88 in 4.91 in 4.25 in 5.17 in 1.5 in 3.92 in 0.69 in 2.75 in 11 0.90 lb
U400 4.00 in 5.14 in 4.50 in 5.85 in 1.5 in 4.17 in 0.70 in 2.91 in 13 0.82 lb
U476 4.44 in 5.49 in 4.81 in 5.85 in 1.5 in 4.48 in 0.87 in 3.24 in 11 1.09 lb
U450 4.50 in 5.61 in 5.00 in 6.17 in 1.5 in 4.67 in 0.73 in 3.22 in 11 1.11 lb
U500 5.00 in 6.19 in 5.50 in 6.79 in 1.5 in 5.17 in 0.78 in 3.37 in 11 1.24 lb
U550 5.50 in 6.67 in 6.00 in 7.10 in 1.5 in 5.67 in 0.67 in 2.49 in 11 1.14 lb
U600 6.00 in 7.18 in 6.50 in 7.48 in 1.5 in 6.17 in 0.80 in 2.62 in 11 1.24 lb
 

For more information:
Call 314-436-0432 Fax 314-436-0481
Email: hardwaremfg@aol.com

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