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90089A420 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90089A420: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: FIBERBOARD OVERALL, thickness: 0.016 INCHES MINIMUM IN, hole_diameter: 1.000 INCHES NOMINAL IN, overall_diameter: 1.250 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-588-9667, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
90089A420
NSN: 5310-01-588-9667
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialFIBERBOARD OVERALL
thickness0.016 INCHES MINIMUM IN
hole_diameter1.000 INCHES NOMINAL IN
overall_diameter1.250 INCHES NOMINAL IN
special_featuresOPERATING TEMPERATURE RANGE: UP TO 230 DEGREE FARINHEIT;THICKNESS TOLERANCE: PLUS OR MINUS 0.005 INCH;DUROMETER HARDNESS: NOT RATED IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification3810-01-550-3454;EXCAVATOR,ARMORED
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyWASHER,FLAT
NSN5310-01-588-9667
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90089A420 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 1.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
COLOR: GRAY/GREY OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: FIBERBOARD OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
COLORGRAY/GREY OVERALL
SPECIAL FEATURESOPERATING TEMPERATURE RANGE: UP TO 230 DEGREE FARINHEIT;THICKNESS TOLERANCE: PLUS OR MINUS 0.005 INCH;DUROMETER HARDNESS: NOT RATED IN
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,FLAT
END ITEM IDENTIFICATION3810-01-550-3454;EXCAVATOR,ARMORED
MATERIALFIBERBOARD OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.000 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90089A420?
90089A420 is a WASHER,FLAT.
What is the NSN for 90089A420?
90089A420 is cataloged in the U.S. Government catalog under NSN 5310-01-588-9667. This indicates validated use in U.S. government and defense supply chains.
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