PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 20489-33
20489-33 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, outside_diameter: 0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-9891, 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
20489-33
NSN: 5310-00-021-9891
FSC: 5310
CAGE: 19315 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER BENDIX NAVIGATION AND CONTROL SYSTEMS (USA)
SPECIFICATIONS
hole_diameter0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
outside_diameter0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
NSN5310-00-021-9891
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20489-33 · 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
•
MATERIAL THICKNESS: 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
STYLE DESIGNATORFLAT INTERNAL TEETH
HOLE DIAMETER0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
2010760PC4Interchangeable
interchangeable cross-reference
interchangeable
MS35333-88Interchangeable
interchangeable cross-reference
interchangeable
9KP522Interchangeable
interchangeable cross-reference
interchangeable
5402-063Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 20489-33?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 20489-33?
20489-33 is a WASHER,LOCK.
What parts can replace 20489-33?
There are 4 known substitutes for 20489-33: 2010760PC4, MS35333-88, 9KP522 and 1 more. Substitute compatibility should be verified for your specific system.
Is 20489-33 still available?
20489-33 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 20489-33

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026