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PartsTable / COMPONENT / MS16203-7
MS16203-7 ✓ 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: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 310 OVERALL, nut_style: HEXAGON, nut_height: 0.617 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), 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 5310-00-543-5630, 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
MS16203-7
NSN: 5310-00-543-5630
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 310 OVERALL
nut_styleHEXAGON
nut_height0.617 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch10
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-543-5630
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS16203-7 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NUT STYLE: HEXAGON
•
BEARING SURFACE TYPE: CHAMFERED
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 10
•
WIDTH ACROSS FLATS: 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH10
WIDTH ACROSS FLATS1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 OR QQ-W-423 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-763 OR QQ-W-423 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-763 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-763 OR QQ-W-423 FED SPEC 5TH MATERIAL RESPONSE OR QQ-W-423 FED SPEC 6TH MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 310 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MILF19700CLASSCTYPE2Interchangeable
interchangeable cross-reference
interchangeable
MS16203-1Interchangeable
interchangeable cross-reference
interchangeable
MS16203-3Interchangeable
interchangeable cross-reference
interchangeable
MS16203-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16203-7?
MS16203-7 is a NUT,PLAIN,HEXAGON.
What parts can replace MS16203-7?
There are 4 known substitutes for MS16203-7: MILF19700CLASSCTYPE2, MS16203-1, MS16203-3 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS16203-7?
MS16203-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-543-5630. 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