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N161 ✓ 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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.329 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, amp_size_rating: 27.0. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-235-6116, 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
N161
NSN: 5310-00-235-6116
FSC: 5310
CAGE: 79780 — MERITOR HEAVY VEHICLE SYSTEMS LLC OFF HIGHWAY PRODUCTS AND SUPPLY DIV HEAVY VEHICLES COMPONENTS OPNS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.329 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
amp_size_rating27.0
special_featuresSERIES 4691
thread_directionRIGHT-HAND
width_across_flats0.561 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeCHAMFERED
end_item_identificationHOT WATER HEATER
NSN5310-00-235-6116
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N161 · 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
•
NUT STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 24
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
THREAD SERIES: UNF
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD CLASS: 2B
•
MATERIAL: STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH24
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD SERIESUNF
BEARING SURFACE TYPECHAMFERED
THREAD CLASS2B
MATERIALSTEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.561 INCHES NOMINAL IN
NUT HEIGHT0.329 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
R1055PC73Interchangeable
interchangeable cross-reference
interchangeable
N161Interchangeable
interchangeable cross-reference
interchangeable
N850-695-7ED254AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N161?
N161 is a RELAY,ELECTROMAGNETIC.
What parts can replace N161?
There are 3 known substitutes for N161: R1055PC73, N161, N850-695-7ED254A. Substitute compatibility should be verified for your specific system.
What is the NSN for N161?
N161 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-235-6116. 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