PartsTable
Technical Data Sheet
1227E343 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OR STEEL COMP 1212 OVERALL, nut_style: HEXAGON, nut_height: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-707-1097, 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
1227E343
NSN: 5310-00-707-1097
FSC: 5310
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OR STEEL COMP 1212 OVERALL
nut_styleHEXAGON
nut_height0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch32
material_document_and_classificationASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-707-1097
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1227E343 · 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
WIDTH ACROSS FLATS: 0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
BEARING SURFACE TYPE: WASHER FACED
THREAD QUANTITY PER INCH: 32
NOMINAL THREAD SIZE: 0.164 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD CLASS: 2B
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH32
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1020 OR STEEL COMP 1212 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
3050-B-1Interchangeable
interchangeable cross-reference
interchangeable
14336-002Interchangeable
interchangeable cross-reference
interchangeable
55025000-002Interchangeable
interchangeable cross-reference
interchangeable
5310007071097Interchangeable
Same NIIN cross-reference
interchangeable
349B1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1227E343?
1227E343 is a NUT,PLAIN,HEXAGON.
What parts can replace 1227E343?
There are 5 known substitutes for 1227E343: 3050-B-1, 14336-002, 55025000-002 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1227E343?
1227E343 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-707-1097. This indicates validated use in U.S. government and defense supply chains.
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