5310-01-050-9019 NUT,SELF-LOCKING,PLATE Index 5310-01-050-9021 WASHER,FLAT

National Stock Number:
5310-01-050-9020

Federal Supply Class:
5310

National Item Identification Number:
010509020

Description:
WASHER,KEY

Detail:
A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes thrust type washer.


Manufacturer Information:
MS19070-15396906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
EXTERNAL KEY QUANTITY15
EXTERNAL PREBENT KEY WIDTH0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
HARDNESS RATING50.0 ROCKWELL C MINIMUM AND 81.0 ROCKWELL C MAXIMUM
HOLE DIAMETER2.973 INCHES MINIMUM AND 3.003 INCHES MAXIMUM
INTERNAL PREBENT KEY LENGTH0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
INTERNAL PREBENT KEY WIDTH0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM
OUTSIDE DIAMETER3.562 INCHES MINIMUM AND 3.592 INCHES MAXIMUM
OVERALL DISTANCE INCLUDING KEYS4.099 INCHES MINIMUM AND 4.119 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONFED. STD 66 NOS. 302,303,304 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL THICKNESS0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING OVERALL
STYLE DESIGNATORKEY
SURFACE TREATMENTPASSIVATE OVERALL


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