PartsTable
Technical Data Sheet
2122918 ✓ 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 NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include gasket: NOT INCLUDED, design_type: PLAIN, mica_shield: NOT PROVIDED, overall_width: 3.000 INCHES NOMINAL IN, overall_length: 12.500 INCHES NOMINAL IN, overall_thickness: 0.250 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 5310-00-350-6600, 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
2122918
NSN: 5310-00-350-6600
FSC: 5310
CAGE: 30379 — EUCLID INC (USA)
SPECIFICATIONS
gasketNOT INCLUDED
design_typePLAIN
mica_shieldNOT PROVIDED
overall_width3.000 INCHES NOMINAL IN
overall_length12.500 INCHES NOMINAL IN
overall_thickness0.250 INCHES NOMINAL IN
end_item_identificationPOSEIDON
NSN5310-00-350-6600
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2122918 · 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
MATERIAL: STEEL OVERALL
COUNTERSINK ANGLE: 90.0 DEGREES NOMINAL NUT
THREAD QUANTITY PER INCH: 16
THREAD SERIES: UN
NOMINAL THREAD SIZE: 1.875 INCHES IN
DRIVE POINT DEPTH: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
THREAD DIRECTION: RIGHT-HAND
NUT DIAMETER: 2.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
COUNTERSINK ANGLE90.0 DEGREES NOMINAL NUT
THREAD QUANTITY PER INCH16
THREAD SERIESUN
NOMINAL THREAD SIZE1.875 INCHES IN
DRIVE POINT DEPTH0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NUT DIAMETER2.750 INCHES NOMINAL IN
NUT THICKNESS0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
1028828Interchangeable
interchangeable cross-reference
interchangeable
41-856Interchangeable
interchangeable cross-reference
interchangeable
23-1710Interchangeable
interchangeable cross-reference
interchangeable
55J530SUB3PC47CVRInterchangeable
interchangeable cross-reference
interchangeable
WW8679220PC2SH12Interchangeable
interchangeable cross-reference
interchangeable
6301-3104495PC47CVRInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2122918?
2122918 is a NUT,PLAIN,ROUND.
What parts can replace 2122918?
There are 18 known substitutes for 2122918: 1028828, 41-856, 23-1710 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2122918?
2122918 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-350-6600. This indicates validated use in U.S. government and defense supply chains.
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