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12279042 ✓ 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 WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.032 INCHES NOMINAL IN, hole_diameter: 0.380 INCHES NOMINAL IN, overall_diameter: 0.620 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-100-8147, 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
12279042
NSN: 5310-01-100-8147
FSC: 5310
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.032 INCHES NOMINAL IN
hole_diameter0.380 INCHES NOMINAL IN
overall_diameter0.620 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationXM1 TANK
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-100-8147
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12279042 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL: COPPER ALLOY OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.620 INCHES NOMINAL IN
•
THICKNESS: 0.032 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.620 INCHES NOMINAL IN
END ITEM IDENTIFICATIONXM1 TANK
THICKNESS0.032 INCHES NOMINAL IN
HOLE DIAMETER0.380 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
KIPPERInterchangeable
interchangeable cross-reference
interchangeable
A24Interchangeable
interchangeable cross-reference
interchangeable
A2124Interchangeable
interchangeable cross-reference
interchangeable
5060-0750Interchangeable
interchangeable cross-reference
interchangeable
45244Interchangeable
interchangeable cross-reference
interchangeable
B-24Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12279042?
12279042 is a WASHER,FLAT.
What parts can replace 12279042?
There are 16 known substitutes for 12279042: KIPPER, A24, A2124 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12279042?
12279042 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-100-8147. 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