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10121390 — NUT,PLAIN,SPLINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10121390: NUT,PLAIN,SPLINE.

The NUT,PLAIN,SPLINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SPLINE, nut_height: 0.130 INCHES MAXIMUM IN, nut_diameter: 0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN, pilot_length: 0.060 INCHES MAXIMUM IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-448-6749, 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
10121390
NSN: 5310-00-448-6749
FSC: 5310 — Nuts and Washers
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSPLINE
nut_height0.130 INCHES MAXIMUM IN
nut_diameter0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
pilot_length0.060 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.177 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
nominal_thread_size0.112 INCHES IN
end_item_identificationAIRCRAFT, ORION P-3,AIRCRAFT, HORNET F/A-18
NSN5310-00-448-6749
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121390 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
NUT DIAMETER: 0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
•
PILOT DIAMETER: 0.177 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.060 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.130 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
NUT DIAMETER0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
PILOT DIAMETER0.177 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
PILOT LENGTH0.060 INCHES MAXIMUM IN
NUT HEIGHT0.130 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
NUT STYLESPLINE
SUBSTITUTES & CROSS-REFERENCES 2
108703Reference document
Same NSN cross-reference
Reference document — Secondary reference
KF2-440C1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 10121390?
10121390 is a NUT,PLAIN,SPLINE.
What parts can replace 10121390?
There are 2 known substitutes for 10121390: 108703, KF2-440C1. Substitute compatibility should be verified for your specific system.
What is the NSN for 10121390?
10121390 is cataloged in the U.S. Government catalog under NSN 5310-00-448-6749. 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.