PartsTable
Technical Data Sheet
10121368 ✓ 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 nut_style: HEXAGON, nut_height: 0.178 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-400-5503, 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
10121368
NSN: 5310-00-400-5503
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
nut_styleHEXAGON
nut_height0.178 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeFLAT OR CHAMFERED
end_item_identificationMRAP RG-33; MULTIPLE LAUNCH ROCKET SYSTEM
thread_quantity_per_inch28
nondefinitive_spec/std_data2 TYPE AND 13 STYLE
NSN5310-00-400-5503
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121368 · 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
WIDTH ACROSS FLATS: 0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
THREAD CLASS: 2B
THREAD QUANTITY PER INCH: 28
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.250 INCHES IN
BEARING SURFACE TYPE: FLAT OR CHAMFERED
NUT STYLE: HEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
THREAD CLASS2B
THREAD QUANTITY PER INCH28
THREAD SERIESUNF
NOMINAL THREAD SIZE0.250 INCHES IN
BEARING SURFACE TYPEFLAT OR CHAMFERED
NUT STYLEHEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 13 STYLE
MATERIAL DOCUMENT AND CLASSIFICATION66,COMP 300 SERIES FED STD ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
41338Interchangeable
interchangeable cross-reference
interchangeable
10015366-052Interchangeable
interchangeable cross-reference
interchangeable
31257Interchangeable
interchangeable cross-reference
interchangeable
368508Interchangeable
interchangeable cross-reference
interchangeable
HT426Interchangeable
interchangeable cross-reference
interchangeable
AN345C416Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10121368?
10121368 is a NUT,PLAIN,HEXAGON.
What parts can replace 10121368?
There are 32 known substitutes for 10121368: 41338, 10015366-052, 31257 and 29 more. Substitute compatibility should be verified for your specific system.
Is 10121368 still available?
10121368 is currently cancelled.
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