PartsTable
Technical Data Sheet
MS51922-53 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 2B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-225-6408, 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
MS51922-53
NSN: 5310-00-225-6408
FSC: 5310
CAGE: G1206 — N. PAPADOP0ULOS & CO OE. (GRC)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class2B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL EXCEPT INSERT
width_across_flats0.922 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
NSN5310-00-225-6408
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS51922-53 · 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: UNF
THREAD QUANTITY PER INCH: 18
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995, GR 5 ASSN STD SINGLE MATERIAL RESPONSE NUT
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL EXCEPT INSERT
BEARING SURFACE FINISH: 125.0 MICROINCHES
NOMINAL THREAD SIZE: 0.625 INCHES IN
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TY 2, CL 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNF
THREAD QUANTITY PER INCH18
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J995, GR 5 ASSN STD SINGLE MATERIAL RESPONSE NUT
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL EXCEPT INSERT
BEARING SURFACE FINISH125.0 MICROINCHES
NOMINAL THREAD SIZE0.625 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TY 2, CL 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
MATERIALSTEEL NUT
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
PEF90S/4P-12Interchangeable
interchangeable cross-reference
interchangeable
Z128Interchangeable
interchangeable cross-reference
interchangeable
25G227Interchangeable
interchangeable cross-reference
interchangeable
10-333Interchangeable
interchangeable cross-reference
interchangeable
327-1Interchangeable
interchangeable cross-reference
interchangeable
717-011365Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51922-53?
MS51922-53 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS51922-53?
There are 28 known substitutes for MS51922-53: PEF90S/4P-12, Z128, 25G227 and 25 more. Substitute compatibility should be verified for your specific system.
Is MS51922-53 still available?
MS51922-53 is currently cancelled.
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