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PartsTable / COMPONENT / SKFAN15
SKFAN15 ✓ 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,ROUND is a the manufacturer industrial component. Key specifications include nut_style: ROUND, nut_diameter: 3.875 INCHES NOMINAL IN, nut_thickness: 0.5938 INCHES NOMINAL IN, thread_series: UNS, hardness_rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6344, 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
SKFAN15
NSN: 5310-00-185-6344
FSC: 5310
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
nut_styleROUND
nut_diameter3.875 INCHES NOMINAL IN
nut_thickness0.5938 INCHES NOMINAL IN
thread_seriesUNS
hardness_rating66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.125 INCHES NOMINAL IN
drive_point_width0.375 INCHES NOMINAL IN
nominal_thread_size2.933 INCHES IN
drive_point_quantity4
thread_pitch_diameters+2.8789 TO 2.8843 INCHES IN
thread_quantity_per_inch12
NSN5310-00-185-6344
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SKFAN15 · 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
•
DRIVE POINT WIDTH: 0.375 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.125 INCHES NOMINAL IN
•
DRIVE POINT QUANTITY: 4
•
NOMINAL THREAD SIZE: 2.933 INCHES IN
•
THREAD SERIES: UNS
•
HARDNESS RATING: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
•
THREAD QUANTITY PER INCH: 12
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
DRIVE POINT WIDTH0.375 INCHES NOMINAL IN
DRIVE POINT DEPTH0.125 INCHES NOMINAL IN
DRIVE POINT QUANTITY4
NOMINAL THREAD SIZE2.933 INCHES IN
THREAD SERIESUNS
HARDNESS RATING66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM
THREAD QUANTITY PER INCH12
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NUT THICKNESS0.5938 INCHES NOMINAL IN
NUT DIAMETER3.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
3211688Interchangeable
interchangeable cross-reference
interchangeable
0913636-7Interchangeable
interchangeable cross-reference
interchangeable
33784SInterchangeable
interchangeable cross-reference
interchangeable
DR2382PC7Interchangeable
interchangeable cross-reference
interchangeable
12Z335-16Interchangeable
interchangeable cross-reference
interchangeable
53-003-022PC7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SKFAN15?
SKFAN15 is a NUT,PLAIN,ROUND.
What parts can replace SKFAN15?
There are 28 known substitutes for SKFAN15: 3211688, 0913636-7, 33784S and 25 more. Substitute compatibility should be verified for your specific system.
Is SKFAN15 still available?
SKFAN15 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026