National Item Identification Number
01-331-7616
National Stock Number
Item Name
WASHER,PRELOAD INDICATING
Federal Supply Class
5310
Description
An item round in shape having a centrally located hole. It consists of two concentric (inner and outer) steel rings, the inner ring is smaller in diameter and higher than the other. These rings are sandwiched between two close tolerance plain washers. As the assembly is tightened, the inner ring takes the load and is deformed until the loose outer ring is bound between the upper and lower plain washers and cannot be moved. The tightened load in the bolt is equal to the load required to compress the inner ring. When the binding of the outer ring occurs and can not be moved, it is a sign that the desired load has been reached.
Commercial and Government Entity Code (Supplier Data)
80539
Reference Numbers (Part Numbers)
PLI-5-5.9
Required Categories
OUTSIDE DIAMETER
UNLOADED LENGTH
RECESS ANGLE
THE MANUFACTURERS DATA
MANUFAC
Required Description
0.583 INCHES MINIMUM AND
0.603 INCHES MAXIMUM
0.208 INCHES MINIMUM
120.0 DEGR