PartsTable
Technical Data Sheet
3451-NU13841-120 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNJC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-426-8883, 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
3451-NU13841-120
NSN: 5310-01-426-8883
FSC: 5310
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleHEXAGON
nut_height0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats1.239 INCHES MINIMUM AND 1.257 INCHES MAXIMUM IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch10
NSN5310-01-426-8883
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3451-NU13841-120 · 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
NOMINAL THREAD SIZE: 0.750 INCHES IN
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
MATERIAL: NICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES: UNJC
THREAD DIRECTION: RIGHT-HAND
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
WIDTH ACROSS FLATS: 1.239 INCHES MINIMUM AND 1.257 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.750 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
MATERIALNICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIESUNJC
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
WIDTH ACROSS FLATS1.239 INCHES MINIMUM AND 1.257 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH10
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
M25027/1-12CL1Interchangeable
interchangeable cross-reference
interchangeable
255593 PIECE 37Interchangeable
interchangeable cross-reference
interchangeable
CD-023-06-20L1Interchangeable
interchangeable cross-reference
interchangeable
MIL-N-25027/1D4Interchangeable
interchangeable cross-reference
interchangeable
H5471905-068D4Interchangeable
interchangeable cross-reference
interchangeable
G5472101-0114Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3451-NU13841-120?
3451-NU13841-120 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 3451-NU13841-120?
There are 15 known substitutes for 3451-NU13841-120: M25027/1-12CL1, 255593 PIECE 37, CD-023-06-20L1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3451-NU13841-120?
3451-NU13841-120 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-426-8883. This indicates validated use in U.S. government and defense supply chains.
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