PartsTable
Technical Data Sheet
88-22790-1 ✓ 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: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), 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 5310-01-466-6312, 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
88-22790-1
NSN: 5310-01-466-6312
FSC: 5310
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED
thread_tolerance_class3H INTERNAL
end_item_identification30KW GENERATOR
thread_quantity_per_inch20
NSN5310-01-466-6312
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 88-22790-1 · 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
THREAD DIRECTION: RIGHT-HAND
NOMINAL THREAD SIZE: 0.250 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD TOLERANCE CLASS: 3H INTERNAL
THREAD QUANTITY PER INCH: 20
BEARING SURFACE TYPE: CHAMFERED
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION30KW GENERATOR
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD TOLERANCE CLASS3H INTERNAL
THREAD QUANTITY PER INCH20
BEARING SURFACE TYPECHAMFERED
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA563,GRADEA ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
4322650Interchangeable
interchangeable cross-reference
interchangeable
88-22790Interchangeable
interchangeable cross-reference
interchangeable
124-7121006 PC 13Interchangeable
interchangeable cross-reference
interchangeable
88-22790-3Interchangeable
interchangeable cross-reference
interchangeable
88-22790-6Interchangeable
interchangeable cross-reference
interchangeable
88-22790-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 88-22790-1?
88-22790-1 is a NUT,PLAIN,HEXAGON.
What parts can replace 88-22790-1?
There are 6 known substitutes for 88-22790-1: 4322650, 88-22790, 124-7121006 PC 13 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 88-22790-1?
88-22790-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-466-6312. This indicates validated use in U.S. government and defense supply chains.
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