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PartsTable / COMPONENT / MS25027/1-16C
MS25027/1-16C ✓ 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 MS25027/1-16C 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 5310-01-733-9701, 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
MS25027/1-16C
NSN: 5310-01-733-9701
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMS25027/1-16C
NSN5310-01-733-9701
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS25027/1-16C · 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 SERIES: UNJC
•
NUT STYLE: HEXAGON
•
MATERIAL: NICKEL ALLOY OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D6456 TYPE 1 OR ASTM D4066 GROUP 1, CLASS 1 OR 2, GRADE 1, 2,3, 4, 5, OR 6 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE LOCKING INSERT
•
NOMINAL THREAD SIZE: 1.000 INCHES IN
•
THREAD CLASS: 3B
•
BEARING SURFACE TYPE: CHAMFERED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNJC
NUT STYLEHEXAGON
MATERIALNICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D6456 TYPE 1 OR ASTM D4066 GROUP 1, CLASS 1 OR 2, GRADE 1, 2,3, 4, 5, OR 6 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE LOCKING INSERT
MATERIALPLASTIC POLYIMIDE LOCKING INSERT
NOMINAL THREAD SIZE1.000 INCHES IN
THREAD CLASS3B
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH8
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
S862-2LB5-1032Interchangeable
interchangeable cross-reference
interchangeable
MILN25027Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-32258Interchangeable
interchangeable cross-reference
interchangeable
2643-820-12 ITEM 53Interchangeable
interchangeable cross-reference
interchangeable
211070737Interchangeable
interchangeable cross-reference
interchangeable
M25027/1-14CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS25027/1-16C?
MS25027/1-16C is a MS25027/1-16C.
What parts can replace MS25027/1-16C?
There are 20 known substitutes for MS25027/1-16C: S862-2LB5-1032, MILN25027, MIL-DTL-32258 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS25027/1-16C?
MS25027/1-16C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-733-9701. 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