Screw Size for Hose Clamp

[knandwana]

Hi :


I am trying to figure the bolt preload due to torque on the clamp. But I am not able to figure out the size of the screw used for this clamp. The max I know is they say use 5/16" hex nut driver to tighen it. Can somebody help ?

These are specs for the clamp : (

http://www.mcmaster.com/#5322k24/=464lqq)

Part Number: 5322K24
$8.80 per Pack of 5
Clamp ID Range, mm
51 to 311
Clamp Type
Worm Drive
Worm Drive Clamp Type
Quick Opening
Band Material
Stainless Steel
Stainless Steel Band Material
Type 201 Stainless Steel
Screw/Bolt Material
Zinc-Plated Steel
Clamp ID Range, In.
2" to 12-1/4"
SAE No.
188
Operating Temperature Range
-40° to +375° F
Band Width
9/16"
Band Thickness
.022"
Torque, in.-lbs.
35
Reusable?
Yes
Specifications Met
Not Rated
Note
Not recommended for use with silicone hose and tube.
Installation Instructions
Tighten with a wrench, slotted screwdriver, or 5/16" hex nutdriver.

Thanks

Kapil,EWI

 

[DAVIDSTECKER]

Think of the worm as a wedge wound into a circle.

Given: Torque= 35 in-lb.
Measure the pitch of the worm.
Measure the diameter of the worm.
Calculate the circumference of the worm.
Calculate the force on the worm in pounds.
Find the angle (Rise over run) for the pitch and the circumference.
Then Force*Tan angle= tension of the band.