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427639 ✓ 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

HEATING ELEMENT,ELECTRICAL,IMMER. Key specifications include material: RUBBER SYNTHETIC RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION, body_style: CABLE, BAND OR TAPE TYPE, element_radiation_spectrum: NONINFRARED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-042-7639, 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
427639
NSN: 5310-00-042-7639
FSC: 5310
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION
body_styleCABLE, BAND OR TAPE TYPE
heat_quantity1
element_quantity1
terminal_quantity2
element_radiation_spectrumNONINFRARED
NSN5310-00-042-7639
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 427639 · 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 16
125253Interchangeable
interchangeable cross-reference
interchangeable
33X30RInterchangeable
interchangeable cross-reference
interchangeable
FFN836GPBTYPE1STYLE3Interchangeable
interchangeable cross-reference
interchangeable
MS35692-1222Interchangeable
interchangeable cross-reference
interchangeable
MS35692-522Interchangeable
interchangeable cross-reference
interchangeable
5310005435971Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 427639?
427639 is a HEATING ELEMENT,ELECTRICAL,IMMER.
What parts can replace 427639?
There are 16 known substitutes for 427639: 125253, 33X30R, FFN836GPBTYPE1STYLE3 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 427639?
427639 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-042-7639. 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