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Technical Data Sheet
PartsTable / COMPONENT / 123-0044
123-0044 ✓ 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 COMP 304 OVERALL, hole_type: PLAINPLAIN, insert_style: PROTRUDING FLANGEPROTRUDING FLANGE, body_diameter: 0.257 INCHES MINIMUM AND 0.257 INCHES MINIMUM AND 0.261 INCHES MAXIMUM0.261 INCHES MAXIMUM IN, hole_diameter: 0.237 INCHES MINIMUM AND 0.237 INCHES MINIMUM AND 0.240 INCHES MAXIMUM0.240 INCHES MAXIMUM IN, flange_diameter: 0.485 INCHES MINIMUM AND 0.485 INCHES MINIMUM AND 0.495 INCHES MAXIMUM0.495 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-225-6865, 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
123-0044
NSN: 5310-00-225-6865
FSC: 5310
CAGE: 10639 — AVIONICS SPECIALTIES, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_typePLAINPLAIN
insert_stylePROTRUDING FLANGEPROTRUDING FLANGE
body_diameter0.257 INCHES MINIMUM AND 0.257 INCHES MINIMUM AND 0.261 INCHES MAXIMUM0.261 INCHES MAXIMUM IN
hole_diameter0.237 INCHES MINIMUM AND 0.237 INCHES MINIMUM AND 0.240 INCHES MAXIMUM0.240 INCHES MAXIMUM IN
flange_diameter0.485 INCHES MINIMUM AND 0.485 INCHES MINIMUM AND 0.495 INCHES MAXIMUM0.495 INCHES MAXIMUM IN
flange_thickness0.008 INCHES MINIMUM AND 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM0.012 INCHES MAXIMUM IN
special_featuresLENGTH .245 TO .255 INCHES; GRIP RANGE .151 TO .190 INCHESLENGTH .245 TO .255 INCHES; GRIP RANGE .151 TO .190 INCHES IN
surface_treatmentPASSIVATE OVERALL
end_item_identificationFITTING INSTL; FAIRING INSTL; V-22 AIRCRAFTFITTING INSTL; FAIRING INSTL; V-22 AIRCRAFT
part_name_assigned_by_controlling_agencyGROMMET,METALLICGROMMET,METALLIC
NSN5310-00-225-6865
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 123-0044 · 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 HEIGHT: 0.031 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
HOLE CONFIGURATION STYLE: CONFIGURATION H
•
THREAD QUANTITY PER INCH: 32
•
WIDTH ACROSS FLATS: 0.907 INCHES NOMINAL IN
•
HOLE TYPE AND QUANTITY: 1 DRILLED
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.031 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.138 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
HOLE CONFIGURATION STYLECONFIGURATION H
THREAD QUANTITY PER INCH32
WIDTH ACROSS FLATS0.907 INCHES NOMINAL IN
HOLE TYPE AND QUANTITY1 DRILLED
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
110 1-13/16Interchangeable
interchangeable cross-reference
interchangeable
10106Interchangeable
interchangeable cross-reference
interchangeable
12344Interchangeable
interchangeable cross-reference
interchangeable
T12344Interchangeable
interchangeable cross-reference
interchangeable
4SC500002Interchangeable
interchangeable cross-reference
interchangeable
349-29Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 123-0044?
123-0044 is a NUT,PLAIN,HEXAGON.
What parts can replace 123-0044?
There are 18 known substitutes for 123-0044: 110 1-13/16, 10106, 12344 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 123-0044?
123-0044 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-225-6865. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026