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Technical Data Sheet
18660 ✓ 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 RESISTOR,FIXED,COMPOSITION is a the manufacturer industrial component. Key specifications include length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT, material: ALUMINUM ALLOY 2024, nut_style: HEXAGON, body_width: 1.000 INCHES NOMINAL IN, nut_height: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN, body_height: 1.719 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-264-0381, 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
18660
NSN: 5310-00-264-0381
FSC: 5310
CAGE: 29201 — JOHN DEER CONSUMER PRODUCTS INC (USA)
SPECIFICATIONS
length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
materialALUMINUM ALLOY 2024
nut_styleHEXAGON
body_width1.000 INCHES NOMINAL IN
nut_height0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
body_height1.719 INCHES NOMINAL IN
body_length1.688 INCHES NOMINAL IN
thread_class2B
leg_thickness0.100 INCHES NOMINAL IN
thread_seriesUNS
heat_treatmentT-8511 SOLUTION HEAT TREATED
inclosure_typeHERMETICALLY SEALED
NSN5310-00-264-0381
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 18660 · 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 HEIGHT: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 0.875 INCHES IN
BEARING SURFACE TYPE: WASHER FACED
THREAD QUANTITY PER INCH: 18
THREAD SERIES: UNS
MATERIAL: STEEL COMP 1010 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.875 INCHES IN
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH18
THREAD SERIESUNS
MATERIALSTEEL COMP 1010 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS2B
THREAD DIRECTIONLEFT-HAND
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
SMC502574Interchangeable
interchangeable cross-reference
interchangeable
398687Interchangeable
interchangeable cross-reference
interchangeable
W5591Interchangeable
interchangeable cross-reference
interchangeable
26598Interchangeable
interchangeable cross-reference
interchangeable
11072Interchangeable
interchangeable cross-reference
interchangeable
K40A108T3511Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18660?
18660 is a RESISTOR,FIXED,COMPOSITION.
What parts can replace 18660?
There are 14 known substitutes for 18660: SMC502574, 398687, W5591 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18660?
18660 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-264-0381. This indicates validated use in U.S. government and defense supply chains.
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