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2-MP-27 ✓ 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: COPPER ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.156 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-063-1517, 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
2-MP-27
NSN: 5310-01-063-1517
FSC: 5310
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
nut_height0.156 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.343 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch32
NSN5310-01-063-1517
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2-MP-27 · 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
•
MATERIAL: COPPER ALLOY OVERALL
•
NUT HEIGHT: 0.156 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
BEARING SURFACE TYPE: CHAMFERED
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
NUT HEIGHT0.156 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD QUANTITY PER INCH32
BEARING SURFACE TYPECHAMFERED
NUT STYLEHEXAGON
THREAD CLASS2B
WIDTH ACROSS FLATS0.343 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
21-630Interchangeable
interchangeable cross-reference
interchangeable
FF-B-171/09J03B2AInterchangeable
interchangeable cross-reference
interchangeable
A-A-59595Interchangeable
interchangeable cross-reference
interchangeable
216-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2-MP-27?
2-MP-27 is a NUT,PLAIN,HEXAGON.
What parts can replace 2-MP-27?
There are 4 known substitutes for 2-MP-27: 21-630, FF-B-171/09J03B2A, A-A-59595 and 1 more. Substitute compatibility should be verified for your specific system.
Is 2-MP-27 still available?
2-MP-27 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