PartsTable
Technical Data Sheet
30651-1 ✓ 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: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL, nut_style: HEXAGON, nut_height: 1.000 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-369-1635, 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
30651-1
NSN: 5310-00-369-1635
FSC: 5310
CAGE: 14058 — THE DEWEY ELECTRONICS CORPORATION (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
nut_styleHEXAGON
nut_height1.000 INCHES NOMINAL IN
thread_class2B
thread_seriesUN
thread_directionRIGHT-HAND
width_across_flats3.388 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
nominal_thread_size2.375 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch12
material_document_and_classificationQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5310-00-369-1635
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 30651-1 · 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
NUT STYLE: HEXAGON
WIDTH ACROSS FLATS: 3.388 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
THREAD CLASS: 2B
THREAD SERIES: UN
NOMINAL THREAD SIZE: 2.375 INCHES IN
BEARING SURFACE TYPE: CHAMFERED
THREAD QUANTITY PER INCH: 12
NUT HEIGHT: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
WIDTH ACROSS FLATS3.388 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
THREAD CLASS2B
THREAD SERIESUN
NOMINAL THREAD SIZE2.375 INCHES IN
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH12
NUT HEIGHT1.000 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
161410Interchangeable
interchangeable cross-reference
interchangeable
3407Interchangeable
interchangeable cross-reference
interchangeable
3407X1AInterchangeable
interchangeable cross-reference
interchangeable
6407JInterchangeable
interchangeable cross-reference
interchangeable
949-829P26TInterchangeable
interchangeable cross-reference
interchangeable
CRESCENTC2NDCXInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 30651-1?
30651-1 is a NUT,PLAIN,HEXAGON.
What parts can replace 30651-1?
There are 14 known substitutes for 30651-1: 161410, 3407, 3407X1A and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 30651-1?
30651-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-369-1635. This indicates validated use in U.S. government and defense supply chains.
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