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90126A039 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90126A039: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include width: 0.075 INCHES NOMINAL IN, length: 2.25 INCHES NOMINAL IN, material: STEEL OVERALL, thickness: 0.075 INCHES NOMINAL IN, hole_diameter: 1.125 INCHES NOMINAL IN, overall_diameter: 2.25 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-623-1362, 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
90126A039
NSN: 5310-01-623-1362
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
width0.075 INCHES NOMINAL IN
length2.25 INCHES NOMINAL IN
materialSTEEL OVERALL
thickness0.075 INCHES NOMINAL IN
hole_diameter1.125 INCHES NOMINAL IN
overall_diameter2.25 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
center_hole_length1.25 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification2355-01-539-3601
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-623-1362
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90126A039 · 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
•
CENTER HOLE LENGTH: 1.25 INCHES NOMINAL IN
•
LENGTH: 2.25 INCHES NOMINAL IN
•
OVERALL DIAMETER: 2.25 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
WIDTH: 0.075 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CENTER HOLE LENGTH1.25 INCHES NOMINAL IN
LENGTH2.25 INCHES NOMINAL IN
OVERALL DIAMETER2.25 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
WIDTH0.075 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT
END ITEM IDENTIFICATION2355-01-539-3601
MATERIALSTEEL OVERALL
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90126A039?
90126A039 is a WASHER,FLAT.
What is the NSN for 90126A039?
90126A039 is cataloged in the U.S. Government catalog under NSN 5310-01-623-1362. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.