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PartsTable / COMPONENT / MA1370103-2E
MA1370103-2E ✓ 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,PLATE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: PLATE, nut_length: 0.722 INCHES NOMINAL IN, plate_width: 0.406 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-113-0565, 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
MA1370103-2E
NSN: 5310-01-113-0565
FSC: 5310
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_stylePLATE
nut_length0.722 INCHES NOMINAL IN
plate_width0.406 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.190 INCHES IN
thread_quantity_per_inch32
material_document_and_classificationA1S1 1042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-113-0565
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MA1370103-2E · 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
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
THREAD CLASS: 3B
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: A1S1 1042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD QUANTITY PER INCH: 32
•
NUT STYLE: PLATE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
THREAD CLASS3B
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONA1S1 1042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD QUANTITY PER INCH32
NUT STYLEPLATE
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
CSE405AInterchangeable
interchangeable cross-reference
interchangeable
55440Interchangeable
interchangeable cross-reference
interchangeable
1424 5/8Interchangeable
interchangeable cross-reference
interchangeable
19058Interchangeable
interchangeable cross-reference
interchangeable
MF19058-3-2Interchangeable
interchangeable cross-reference
interchangeable
5310PL1803312Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MA1370103-2E?
MA1370103-2E is a NUT,PLAIN,PLATE.
What parts can replace MA1370103-2E?
There are 12 known substitutes for MA1370103-2E: CSE405A, 55440, 1424 5/8 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MA1370103-2E?
MA1370103-2E is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-113-0565. 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