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National Stock Number:
5310-01-557-4222
Federal Supply Class:
5310
National Item Identification Number:
015574222
Description:
WASHER,PRELOAD INDICATING
Detail:
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.
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Manufacturer Information:
| PLI-10-31.7 | 56878 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| BOLT MINIMUM TENSIL STRENGTH | 180000 POUNDS PER SQUARE INCH | | BOLT PLACEMENT LOCATION | UNDER THE NUT | | BOLT THREAD SERIES DESIGNATOR | FINE | | BOLT THREAD DIAMETER FOR WHICH DESIGNED | 0.625 INCHES | | BOLT YIELD STRENGTH PERCENTAGE | 80 | | COLOR | BLUE BODY | | HOLE DIAMETER | 0.626 INCHES NOMINAL | | OUTSIDE DIAMETER | 1.062 INCHES NOMINAL | | MATERIAL | STEEL BODY | | PART NAME ASSIGNED BY CONTROLLING AGENCY | PRELOAD INDICATING WASHER ASSEMBLY | | SPECIAL FEATURES | MEAN PRELOAD OF 31,700 LBS; 3 WIGGLE HOLES EQUALLY SPACED RADIALLY | | UNLOADED LENGTH | 0.345 INCHES MAXIMUM | | STYLE DESIGNATOR | PLAIN | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE BODY | | SURFACE TREATMENT | CADMIUM BODY |
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