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10122257 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

10122257: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 NUT, nut_style: SLEEVE, nut_length: 0.350 INCHES NOMINAL IN, nut_diameter: 0.495 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-365-7265, 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
10122257
NSN: 5310-01-365-7265
FSC: 5310 — Nuts and Washers
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialCOPPER ALLOY 172 NUT
nut_styleSLEEVE
nut_length0.350 INCHES NOMINAL IN
nut_diameter0.495 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
flange_thickness0.016 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_size0.312 INCHES IN
cross-sectional_shapeHEXAGONAL NUT
thread_quantity_per_inch24
flange_width_across_flats0.679 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
NSN5310-01-365-7265
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10122257 · 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
•
FLANGE WIDTH ACROSS FLATS: 0.679 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
•
NUT LENGTH: 0.350 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.016 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4640 ASSN STD SINGLE MATERIAL RESPONSE NUT
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
NUT DIAMETER: 0.495 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE WIDTH ACROSS FLATS0.679 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
NUT LENGTH0.350 INCHES NOMINAL IN
FLANGE THICKNESS0.016 INCHES NOMINAL IN
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4640 ASSN STD SINGLE MATERIAL RESPONSE NUT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
NUT DIAMETER0.495 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPEHEXAGONAL NUT
NUT STYLESLEEVE
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
MBEU145265Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10122257?
10122257 is a NUT,SLEEVE.
What parts can replace 10122257?
There is 1 known substitute for 10122257: MBEU145265. Substitute compatibility should be verified for your specific system.
What is the NSN for 10122257?
10122257 is cataloged in the U.S. Government catalog under NSN 5310-01-365-7265. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.