Preload Indicating Washer

03A285-6-92

03A285-6-92
(NSN) National Stock Number
5310-00-445-8444
Federal Supply Classification
5310 Nuts and Washers
Item Name Code
42430
Schedule B Code
-
Summary

Mat mild steel;0.38 in. bore;0.471 in. od;0.107 in. thk;constructed w/groove around perimeter,groove filled w/fluorescent wax which flows in a manner to make visible any deformation of washer by excessive preload special features

DAC HCC DMIL RNCC
5 - - 5
RNVC SADC MSDS RNAAC
2 - - ZZ
Identification

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.

INC FIIG Concept Condition
42430 A022B0 - 1
Specifications
Special Features
mat mild steel;0.38 in. bore;0.471 in. od;0.107 in. thk;constructed w/groove around perimeter,groove filled w/fluorescent wax which flows in a manner to make visible any deformation of washer by excessive preload
Details Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
PLI-6-9.2 80539 5 - 5 2 - ZZ
PLI6-9-2 56878 X - 3 2 - XX
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
55210 - U U
RVC WCC TCC SHC
- 573 Z Z

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Manufacturer
NORTHROP GRUMMAN SYSTEMS CORP DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS
CAGE: 1W025
PALMDALE , CA , 93550-7401
UNITED STATES
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FAQs
Frequently asked questions for NSN 5310-00-445-8444
What is the NIIN of the NSN 5310-00-445-8444?
The National Item Identification Number (NIIN) of the NSN 5310-00-445-8444 is 00-445-8444
When the NSN 5310-00-445-8444 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 5310-00-445-8444 contain any precious metals?
Type/content is unknown
Does the NSN 5310-00-445-8444 contain any hazardous material?
No data in HMIRS

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