PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 218550
218550 ✓ 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 PLUG,AIRCRAFT,MATER is a the manufacturer industrial component. Key specifications include end_item_identification: KC-130J AE2100D3 ENGINE, criticality_code_justification: AGAV. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8550, 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
218550
NSN: 5310-00-021-8550
FSC: 5310
CAGE: 1WL60 — LOCKHEED MARTIN SERVICES, LLC (USA)
SPECIFICATIONS
end_item_identificationKC-130J AE2100D3 ENGINE
criticality_code_justificationAGAV
NSN5310-00-021-8550
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 218550 · 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
•
THREAD QUANTITY PER INCH: 48
•
NOMINAL THREAD SIZE: 0.099 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: FLAT
•
NONDEFINITIVE SPEC/STD DATA: C GROUP AND 2 TYPE AND 1 STYLE AND A GRADE
•
MATERIAL: STEEL OVERALL
•
NUT HEIGHT: 0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.1800 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH48
NOMINAL THREAD SIZE0.099 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPEFLAT
NONDEFINITIVE SPEC/STD DATAC GROUP AND 2 TYPE AND 1 STYLE AND A GRADE
MATERIALSTEEL OVERALL
NUT HEIGHT0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.1800 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
103089Interchangeable
interchangeable cross-reference
interchangeable
340543Interchangeable
interchangeable cross-reference
interchangeable
BBKX2DInterchangeable
interchangeable cross-reference
interchangeable
110921Interchangeable
interchangeable cross-reference
interchangeable
FFN836GPCTYPE2STYLE1GRADEAInterchangeable
interchangeable cross-reference
interchangeable
110922Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 218550?
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 218550?
218550 is a PLUG,AIRCRAFT,MATER.
What parts can replace 218550?
There are 18 known substitutes for 218550: 103089, 340543, BBKX2D and 15 more. Substitute compatibility should be verified for your specific system.
Is 218550 still available?
218550 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 — 218550

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