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18-09020-05 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

18-09020-05: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.523 INCHES MAXIMUM IN, outside_diameter: 0.873 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC OR CADMIUM OVERALL, material_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-484-0035, 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
18-09020-05
NSN: 5310-01-484-0035
FSC: 5310 — Nuts and Washers
CAGE: 8X691 — SIERRA NEVADA COMPANY, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.523 INCHES MAXIMUM IN
outside_diameter0.873 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC OR CADMIUM OVERALL
material_thickness0.125 INCHES NOMINAL IN
end_item_identificationRLST VEH INTE;AIR TRAFFIC CONTROL LANDING
material_document_and_classificationAISI 4037 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-484-0035
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 18-09020-05 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 4037 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.873 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
COLOR: YELLOW OVERALL
•
SURFACE TREATMENT: ZINC OR CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 4037 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.873 INCHES MAXIMUM IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
COLORYELLOW OVERALL
SURFACE TREATMENTZINC OR CADMIUM OVERALL
END ITEM IDENTIFICATIONRLST VEH INTE;AIR TRAFFIC CONTROL LANDING
MATERIALSTEEL OVERALL
HOLE DIAMETER0.523 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
50WS8Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
18-09020Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 18-09020-05?
18-09020-05 is a WASHER,LOCK.
What parts can replace 18-09020-05?
There are 2 known substitutes for 18-09020-05: 50WS8, 18-09020. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-09020-05?
18-09020-05 is cataloged in the U.S. Government catalog under NSN 5310-01-484-0035. 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.