PartsTable
Technical Data Sheet
33D4C12 ✓ 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 CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.734 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-989-1874, 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
33D4C12
NSN: 5310-00-989-1874
FSC: 5310
CAGE: 75497 — LAMSON AND SESSIONS CO THE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.734 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats1.231 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch10
nondefinitive_spec/std_data2 TYPE AND 11 STYLE
NSN5310-00-989-1874
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 33D4C12 · 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
NOMINAL THREAD SIZE: 0.750 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH: 10
NUT HEIGHT: 0.734 INCHES NOMINAL IN
NUT STYLE: HEXAGON
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH10
NUT HEIGHT0.734 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
WIDTH ACROSS FLATS1.231 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA81348-FF-N-836 GOVERNMENT STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
AOLA-B1B-A10Interchangeable
interchangeable cross-reference
interchangeable
831-164Interchangeable
interchangeable cross-reference
interchangeable
831-160Interchangeable
interchangeable cross-reference
interchangeable
D11531Interchangeable
interchangeable cross-reference
interchangeable
15535Interchangeable
interchangeable cross-reference
interchangeable
A-1415Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 33D4C12?
33D4C12 is a NUT,PLAIN,HEXAGON.
What parts can replace 33D4C12?
There are 24 known substitutes for 33D4C12: AOLA-B1B-A10, 831-164, 831-160 and 21 more. Substitute compatibility should be verified for your specific system.
Is 33D4C12 still available?
33D4C12 is currently cancelled.
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