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10018890-004 — Technical Data Sheet

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— · 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 material: PLASTIC POLYAMIDE NYLON OVERALL, hole_diameter: 0.255 INCHES NOMINAL IN, outside_diameter: 0.500 INCHES NOMINAL IN, material_thickness: 0.137 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-818-4548, 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
10018890-004
NSN: 5310-00-818-4548
FSC: 5310
CAGE: 17773 — BALLISTIC MISSILE DEFENSE SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
hole_diameter0.255 INCHES NOMINAL IN
outside_diameter0.500 INCHES NOMINAL IN
material_thickness0.137 INCHES NOMINAL IN
NSN5310-00-818-4548
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10018890-004 · 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: PLASTIC POLYAMIDE NYLON OVERALL
•
MATERIAL THICKNESS: 0.137 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.255 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
MATERIAL THICKNESS0.137 INCHES NOMINAL IN
HOLE DIAMETER0.255 INCHES NOMINAL IN
OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
158-285Interchangeable
interchangeable cross-reference
interchangeable
914FInterchangeable
interchangeable cross-reference
interchangeable
72-6970-947Interchangeable
interchangeable cross-reference
interchangeable
N18 1-4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10018890-004?
10018890-004 is a WASHER,LOCK.
What parts can replace 10018890-004?
There are 4 known substitutes for 10018890-004: 158-285, 914F, 72-6970-947 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10018890-004?
10018890-004 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-818-4548. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026