PartsTable
Technical Data Sheet
120903H ✓ 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: COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL, nut_style: HEXAGON, nut_height: 0.422 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, special_features: COMPOSITION 4 MATERIAL STRESS RELIEVED PER SPEC MIL-B-857A SHIPS A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-2006, 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
120903H
NSN: 5310-00-012-2006
FSC: 5310
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
materialCOPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL
nut_styleHEXAGON
nut_height0.422 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
special_featuresCOMPOSITION 4 MATERIAL STRESS RELIEVED PER SPEC MIL-B-857A SHIPS A
thread_directionRIGHT-HAND
width_across_flats1.212 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch24
nondefinitive_spec/std_data2 TYPE AND 1 STYLE
NSN5310-00-012-2006
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 120903H · 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 DIRECTION: RIGHT-HAND
THREAD QUANTITY PER INCH: 24
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.375 INCHES IN
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
DEPARTURE FROM CITED DESIGNATOR: MODIFIED BY THD CLASS RQMT.
MATERIAL: COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH24
THREAD SERIESUNF
NOMINAL THREAD SIZE0.375 INCHES IN
SPECIAL FEATURESCOMPOSITION 4 MATERIAL STRESS RELIEVED PER SPEC MIL-B-857A SHIPS A
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
DEPARTURE FROM CITED DESIGNATORMODIFIED BY THD CLASS RQMT.
MATERIALCOPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL
THREAD CLASS3B
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
114547Interchangeable
interchangeable cross-reference
interchangeable
917252Interchangeable
interchangeable cross-reference
interchangeable
122002Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEAInterchangeable
interchangeable cross-reference
interchangeable
299813PC5Interchangeable
interchangeable cross-reference
interchangeable
FFN836TYPE2STYLE1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 120903H?
120903H is a NUT,PLAIN,HEXAGON.
What parts can replace 120903H?
There are 22 known substitutes for 120903H: 114547, 917252, 122002 and 19 more. Substitute compatibility should be verified for your specific system.
Is 120903H still available?
120903H is currently cancelled.
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