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Technical Data Sheet
PartsTable / COMPONENT / 72056666
72056666 ✓ 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 OVERALL, nut_style: HEXAGON, nut_height: 0.094 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-194-8196, 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
72056666
NSN: 5310-00-194-8196
FSC: 5310
CAGE: 4J007 — MSC INDUSTRIAL DIRECT CO., INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.094 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch40
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-194-8196
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 72056666 · 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: 0.250 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 40
•
BEARING SURFACE TYPE: CHAMFERED
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NUT HEIGHT: 0.094 INCHES NOMINAL IN
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH40
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.138 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT HEIGHT0.094 INCHES NOMINAL IN
THREAD CLASS2B
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
4130053Interchangeable
interchangeable cross-reference
interchangeable
3-598Interchangeable
interchangeable cross-reference
interchangeable
2943-A30Interchangeable
interchangeable cross-reference
interchangeable
N164PC97Interchangeable
interchangeable cross-reference
interchangeable
N304ALT1PC97Interchangeable
interchangeable cross-reference
interchangeable
4000-8401Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 72056666?
72056666 is a NUT,PLAIN,HEXAGON.
What parts can replace 72056666?
There are 16 known substitutes for 72056666: 4130053, 3-598, 2943-A30 and 13 more. Substitute compatibility should be verified for your specific system.
Is 72056666 still available?
72056666 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026