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Technical Data Sheet
PartsTable / COMPONENT / MS25027/1-14C
MS25027/1-14C ✓ 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 MS25027/1-14C is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-385-5986, 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
MS25027/1-14C
NSN: 5310-01-385-5986
FSC: 5310
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
Part NumberMS25027/1-14C
NSN5310-01-385-5986
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS25027/1-14C · 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 CLASS: 3B
•
THREAD SERIES: UNJC
•
THREAD QUANTITY PER INCH: 9
•
WIDTH ACROSS FLATS: 1.427 INCHES MINIMUM AND 1.446 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
END ITEM IDENTIFICATION34 INCH TITANIUM BUTTERFLY VALVE ON NUC SUB IN
THREAD SERIESUNJC
THREAD QUANTITY PER INCH9
WIDTH ACROSS FLATS1.427 INCHES MINIMUM AND 1.446 INCHES MAXIMUM IN
NUT STYLEHEXAGON
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NOMINAL THREAD SIZE0.875 INCHES IN
NUT HEIGHT1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
TEMP RATING250.0 FAHRENHEIT MAXIMUM DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
ESNA 09NU-149Interchangeable
interchangeable cross-reference
interchangeable
PL-999R0501 FIND 76L1Interchangeable
interchangeable cross-reference
interchangeable
PL-999R0501-D FIND 76Interchangeable
interchangeable cross-reference
interchangeable
S862-2LB5-1032Interchangeable
interchangeable cross-reference
interchangeable
MILN25027Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-32258Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS25027/1-14C?
MS25027/1-14C is a MS25027/1-14C.
What parts can replace MS25027/1-14C?
There are 33 known substitutes for MS25027/1-14C: ESNA 09NU-149, PL-999R0501 FIND 76L1, PL-999R0501-D FIND 76 and 30 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS25027/1-14C?
MS25027/1-14C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-385-5986. 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