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Technical Data Sheet
PartsTable / COMPONENT / 7412391
7412391 ✓ 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,CASTELLATED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 3140 OR STEEL COMP 4140 OR STEEL COMP 2330 OR STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 1.125 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, 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 5310-00-220-6803, 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
7412391
NSN: 5310-00-220-6803
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 3140 OR STEEL COMP 4140 OR STEEL COMP 2330 OR STEEL OVERALL
nut_styleCASTELLATED, HEXAGON
nut_height1.125 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats1.049 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch16
material_document_and_classificationSAE ASSN STD 1ST MATERIAL RESPONSE OR SAE ASSN STD 2ND MATERIAL RESPONSE OR SAE ASSN STD 3RD MATERIAL RESPONSE OR SAE 4735 ASSN STD 4TH MATERIAL RESPONSE OVERALL
NSN5310-00-220-6803
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7412391 · 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: UNF
•
NUT STYLE: CASTELLATED, HEXAGON
•
BEARING SURFACE TYPE: WASHER FACED
•
WIDTH ACROSS FLATS: 1.049 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 16
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD 1ST MATERIAL RESPONSE OR SAE ASSN STD 2ND MATERIAL RESPONSE OR SAE ASSN STD 3RD MATERIAL RESPONSE OR SAE 4735 ASSN STD 4TH MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 3140 OR STEEL COMP 4140 OR STEEL COMP 2330 OR STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
NUT STYLECASTELLATED, HEXAGON
BEARING SURFACE TYPEWASHER FACED
WIDTH ACROSS FLATS1.049 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH16
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD 1ST MATERIAL RESPONSE OR SAE ASSN STD 2ND MATERIAL RESPONSE OR SAE ASSN STD 3RD MATERIAL RESPONSE OR SAE 4735 ASSN STD 4TH MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 3140 OR STEEL COMP 4140 OR STEEL COMP 2330 OR STEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT1.125 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.750 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
20-150-3013-2Interchangeable
interchangeable cross-reference
interchangeable
14153Interchangeable
interchangeable cross-reference
interchangeable
R14153Interchangeable
interchangeable cross-reference
interchangeable
853946Interchangeable
interchangeable cross-reference
interchangeable
V3D10078PC10Interchangeable
interchangeable cross-reference
interchangeable
V2B10666TAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7412391?
7412391 is a NUT,PLAIN,CASTELLATED,HEXAGON.
What parts can replace 7412391?
There are 15 known substitutes for 7412391: 20-150-3013-2, 14153, R14153 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7412391?
7412391 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-220-6803. 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