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Technical Data Sheet
PartsTable / COMPONENT / FCC15667-7
FCC15667-7 ✓ 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 NUT,PLAIN,SPLINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SPLINE, nut_height: 0.526 INCHES NOMINAL IN, nut_diameter: 0.515 INCHES NOMINAL IN, pilot_length: 0.256 INCHES NOMINAL IN, thread_class: 2B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-323-2340, 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
FCC15667-7
NSN: 5310-00-323-2340
FSC: 5310
CAGE: 61463 — LANXESS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSPLINE
nut_height0.526 INCHES NOMINAL IN
nut_diameter0.515 INCHES NOMINAL IN
pilot_length0.256 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
pilot_diameter0.400 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch28
NSN5310-00-323-2340
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FCC15667-7 · 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 DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
•
PILOT DIAMETER: 0.400 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
THREAD QUANTITY PER INCH: 28
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
PILOT LENGTH: 0.256 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
PILOT DIAMETER0.400 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH28
THREAD SERIESUNF
NOMINAL THREAD SIZE0.250 INCHES IN
PILOT LENGTH0.256 INCHES NOMINAL IN
NUT DIAMETER0.515 INCHES NOMINAL IN
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
8635Interchangeable
interchangeable cross-reference
interchangeable
7-872-000010Interchangeable
interchangeable cross-reference
interchangeable
P-400-313-110Interchangeable
interchangeable cross-reference
interchangeable
1005-029-A000Interchangeable
interchangeable cross-reference
interchangeable
8898516Interchangeable
interchangeable cross-reference
interchangeable
5245Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FCC15667-7?
FCC15667-7 is a NUT,PLAIN,SPLINE.
What parts can replace FCC15667-7?
There are 9 known substitutes for FCC15667-7: 8635, 7-872-000010, P-400-313-110 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FCC15667-7?
FCC15667-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-323-2340. 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: July 2026