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MS51922-9 — Technical Data Sheet

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— · 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 part_name_assigned_by_controlling_agency: NUT, SELF-LOCKING, HEXAGON-PREVAILING TORQUE, GENERAL PUR. This part is cataloged in the Federal Logistics Information System under NSN 5310-00-984-3806, 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
MS51922-9
NSN: 5310-00-984-3806
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
part_name_assigned_by_controlling_agencyNUT, SELF-LOCKING, HEXAGON-PREVAILING TORQUE, GENERAL PUR
NSN5310-00-984-3806
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS51922-9 · 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
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
THREAD QUANTITY PER INCH: 18
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL EXCEPT INSERT
•
NUT HEIGHT: 0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL NUT
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
TECHNICAL CHARACTERISTICS
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
THREAD QUANTITY PER INCH18
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL EXCEPT INSERT
NUT HEIGHT0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL NUT
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.312 INCHES IN
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
10322InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
53296InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
532964TKInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
H78CAICInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MILH26312AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
N8T380FInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51922-9?
MS51922-9 is a NUT,PLAIN,HEXAGON.
What parts can replace MS51922-9?
There are 25 known substitutes for MS51922-9: 10322, 53296, 532964TK and 22 more. Substitute compatibility should be verified for your specific system.
Is MS51922-9 still available?
MS51922-9 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: September 2026