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Technical Data Sheet
PartsTable / COMPONENT / 5310000125016
5310000125016 ✓ 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 OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.274 INCHES MINIMUM AND 0.288 INCHES MAXIMUM IN, thread_class: 2B, 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 5310-00-012-5016, 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
5310000125016
NSN: 5310-00-012-5016
FSC: 5310
CAGE: A00AM — E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCASTELLATED, HEXAGON
nut_height0.274 INCHES MINIMUM AND 0.288 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
width_across_flats0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch28
nondefinitive_spec/std_dataA TYPE
NSN5310-00-012-5016
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310000125016 · 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
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
NUT STYLE: CASTELLATED, HEXAGON
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: A TYPE
•
NUT HEIGHT: 0.274 INCHES MINIMUM AND 0.288 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND
NUT STYLECASTELLATED, HEXAGON
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATAA TYPE
NUT HEIGHT0.274 INCHES MINIMUM AND 0.288 INCHES MAXIMUM IN
THREAD CLASS2B
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
34567Interchangeable
interchangeable cross-reference
interchangeable
T-8-3-100Interchangeable
interchangeable cross-reference
interchangeable
37115Interchangeable
interchangeable cross-reference
interchangeable
31310Interchangeable
interchangeable cross-reference
interchangeable
322235Interchangeable
interchangeable cross-reference
interchangeable
R4303SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5310000125016?
5310000125016 is a NUT,PLAIN,CASTELLATED,HEXAGON.
What parts can replace 5310000125016?
There are 21 known substitutes for 5310000125016: 34567, T-8-3-100, 37115 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5310000125016?
5310000125016 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-5016. 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