PartsTable
Technical Data Sheet
X18231 ✓ 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 1038 OVERALL, nut_style: HEXAGON, nut_height: 0.396 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF, hardness_rating: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-9514, 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
X18231
NSN: 5310-00-208-9514
FSC: 5310
CAGE: 14351 — TELEDYNE CONTINENTAL MOTORS INDUSTRIAL PRODUCTS DIV TELEDYNE INDUSTRIES INC SUB OF TELEDYNE INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1038 OVERALL
nut_styleHEXAGON
nut_height0.396 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
hardness_rating28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
width_across_flats0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch24
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-208-9514
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X18231 · 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
HARDNESS RATING: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD QUANTITY PER INCH: 24
BEARING SURFACE TYPE: WASHER FACED
NOMINAL THREAD SIZE: 0.375 INCHES IN
THREAD SERIES: UNF
WIDTH ACROSS FLATS: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
MATERIAL: STEEL COMP 1038 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
HARDNESS RATING28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD QUANTITY PER INCH24
BEARING SURFACE TYPEWASHER FACED
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD SERIESUNF
WIDTH ACROSS FLATS0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1038 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT0.396 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
41-10161Interchangeable
interchangeable cross-reference
interchangeable
R10Interchangeable
interchangeable cross-reference
interchangeable
DBF23/64BInterchangeable
interchangeable cross-reference
interchangeable
A7777Interchangeable
interchangeable cross-reference
interchangeable
202-0123-201Interchangeable
interchangeable cross-reference
interchangeable
12-123Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X18231?
X18231 is a NUT,PLAIN,HEXAGON.
What parts can replace X18231?
There are 14 known substitutes for X18231: 41-10161, R10, DBF23/64B and 11 more. Substitute compatibility should be verified for your specific system.
Is X18231 still available?
X18231 is currently cancelled.
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