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S4402 ✓ 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

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include nut_style: CLINCH, nut_height: 0.096 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN, head_length: 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN, nut_diameter: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, pilot_length: 0.049 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN, thread_class: 2A NUT THREAD A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-986-7094, 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
S4402
NSN: 5310-00-986-7094
FSC: 5310
CAGE: 45934 — ONTIC ENGINEERING & MANUFACTURING, INC DBA ONTIC US (USA)
SPECIFICATIONS
nut_styleCLINCH
nut_height0.096 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
head_length0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
nut_diameter0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
pilot_length0.049 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
thread_class2A NUT THREAD A
head_diameter0.160 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_length0.150 INCHES MINIMUM AND 0.190 INCHES MAXIMUM NUT THREAD IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_length0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
pilot_diameter0.161 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MAXIMUM
NSN5310-00-986-7094
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S4402 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
0405-05Interchangeable
interchangeable cross-reference
interchangeable
S-440-2CXInterchangeable
interchangeable cross-reference
interchangeable
S440-2Interchangeable
interchangeable cross-reference
interchangeable
FH-440-4C1Interchangeable
interchangeable cross-reference
interchangeable
77-04-104-13Interchangeable
interchangeable cross-reference
interchangeable
47-00213-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S4402?
S4402 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace S4402?
There are 7 known substitutes for S4402: 0405-05, S-440-2CX, S440-2 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S4402?
S4402 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-986-7094. 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