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Technical Data Sheet
PartsTable / COMPONENT / 13X38
13X38 ✓ 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 OVERALL, nut_style: HEXAGON, nut_height: 0.359 INCHES NOMINAL 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 5310-00-022-0067, 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
13X38
NSN: 5310-00-022-0067
FSC: 5310
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.359 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.750 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch14
nondefinitive_spec/std_dataA TYPE
departure_from_cited_documentAS MODIFIED BY NUT HEIGHT
NSN5310-00-022-0067
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 13X38 · 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
•
BEARING SURFACE TYPE: WASHER FACED
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 14
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY NUT HEIGHT
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPEWASHER FACED
NOMINAL THREAD SIZE0.438 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH14
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY NUT HEIGHT
NUT HEIGHT0.359 INCHES NOMINAL IN
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
N-37Interchangeable
interchangeable cross-reference
interchangeable
N-13Interchangeable
interchangeable cross-reference
interchangeable
EASTERN RA3Interchangeable
interchangeable cross-reference
interchangeable
X-42935-59Interchangeable
interchangeable cross-reference
interchangeable
X42936-59Interchangeable
interchangeable cross-reference
interchangeable
51001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 13X38?
13X38 is a NUT,PLAIN,HEXAGON.
What parts can replace 13X38?
There are 16 known substitutes for 13X38: N-37, N-13, EASTERN RA3 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 13X38?
13X38 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-022-0067. 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