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Technical Data Sheet
PartsTable / COMPONENT / 0.625-11UN-2B NICU
0.625-11UN-2B NICU ✓ 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 0.625-11UN-2B NICU is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-272-5701, 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
0.625-11UN-2B NICU
NSN: 5310-00-272-5701
FSC: 5310
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number0.625-11UN-2B NICU
NSN5310-00-272-5701
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 0.625-11UN-2B NICU · 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
•
THREAD QUANTITY PER INCH: 11
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
NUT HEIGHT: 0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH11
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.625 INCHES IN
NUT HEIGHT0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 400 GRADE OR 405 GRADE
MATERIALNICKEL ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
803-1385541-06X-11Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-1222GInterchangeable
interchangeable cross-reference
interchangeable
803-1385623-04XX-14Interchangeable
interchangeable cross-reference
interchangeable
NB-2502-E-0200 PIECE 14Interchangeable
interchangeable cross-reference
interchangeable
830-0625-901Interchangeable
interchangeable cross-reference
interchangeable
BN2502-0200-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0.625-11UN-2B NICU?
0.625-11UN-2B NICU is a 0.625-11UN-2B NICU.
What parts can replace 0.625-11UN-2B NICU?
There are 21 known substitutes for 0.625-11UN-2B NICU: 803-1385541-06X-11, MIL-S-1222G, 803-1385623-04XX-14 and 18 more. Substitute compatibility should be verified for your specific system.
Is 0.625-11UN-2B NICU still available?
0.625-11UN-2B NICU 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