PartsTable
Technical Data Sheet
MS51984-2 ✓ 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,CONE SEAT,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: CONE SEAT, HEXAGON, nut_height: 0.562 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, cone_seat_angle: 60.00 DEGREES NOMINAL, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-136-1467, 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
MS51984-2
NSN: 5310-00-136-1467
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
nut_styleCONE SEAT, HEXAGON
nut_height0.562 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
cone_seat_angle60.00 DEGREES NOMINAL
thread_directionRIGHT-HAND
features_providedCASEHARDENED
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats0.730 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
counterbore_diameter0.516 INCHES NOMINAL NUT IN
nut_counterbore_depth0.094 INCHES NOMINAL NUT IN
NSN5310-00-136-1467
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS51984-2 · 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: 2B
NUT COUNTERBORE DEPTH: 0.094 INCHES NOMINAL NUT IN
NOMINAL THREAD SIZE: 0.500 INCHES IN
THREAD QUANTITY PER INCH: 20
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
COUNTERBORE DIAMETER: 0.516 INCHES NOMINAL NUT IN
NUT STYLE: CONE SEAT, HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
NUT COUNTERBORE DEPTH0.094 INCHES NOMINAL NUT IN
NOMINAL THREAD SIZE0.500 INCHES IN
THREAD QUANTITY PER INCH20
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
COUNTERBORE DIAMETER0.516 INCHES NOMINAL NUT IN
NUT STYLECONE SEAT, HEXAGON
MATERIALSTEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1115 OR STEEL COMP 1116 OR STEEL COMP 1117 OR STEEL COMP 1118 OVERALL
THREAD SERIESUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
PC68290-4Interchangeable
interchangeable cross-reference
interchangeable
3300P1-502Interchangeable
interchangeable cross-reference
interchangeable
SCB98519Interchangeable
interchangeable cross-reference
interchangeable
105114Interchangeable
interchangeable cross-reference
interchangeable
01-511-2 PIECEInterchangeable
interchangeable cross-reference
interchangeable
PLG36-1PC2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51984-2?
MS51984-2 is a NUT,PLAIN,CONE SEAT,HEXAGON.
What parts can replace MS51984-2?
There are 11 known substitutes for MS51984-2: PC68290-4, 3300P1-502, SCB98519 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51984-2?
MS51984-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-136-1467. This indicates validated use in U.S. government and defense supply chains.
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