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R50899 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

R50899: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.394 INCHES NOMINAL IN, outside_diameter: 0.724 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-197-2389, 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
R50899
NSN: 5310-01-197-2389
FSC: 5310 — Nuts and Washers
CAGE: 75160 — DEERE & CO (USA)
SPECIFICATIONS
hole_diameter0.394 INCHES NOMINAL IN
outside_diameter0.724 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
NSN5310-01-197-2389
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R50899 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.724 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.394 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.724 INCHES NOMINAL IN
HOLE DIAMETER0.394 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
90258-10001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R50899?
R50899 is a WASHER,LOCK.
What parts can replace R50899?
There is 1 known substitute for R50899: 90258-10001. Substitute compatibility should be verified for your specific system.
What is the NSN for R50899?
R50899 is cataloged in the U.S. Government catalog under NSN 5310-01-197-2389. 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.