PartsTable
Technical Data Sheet
MB423 ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN, overall_height: 0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN, overall_length: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN, shear_strength: 60000 SINGLE POUNDS PER SQUARE INCH, style_designator: PLAIN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-732-2831, 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
MB423
NSN: 5315-00-732-2831
FSC: 5315
CAGE: 25729 — GRACE W E MFG CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
overall_height0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
overall_length1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
shear_strength60000 SINGLE POUNDS PER SQUARE INCH
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
material_document_and_classification66 COMP 1018 TO 1035 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-732-2831
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MB423 · 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
STYLE DESIGNATOR: PLAIN
MATERIAL DOCUMENT AND CLASSIFICATION: 66 COMP 1018 TO 1035 FED STD SINGLE MATERIAL RESPONSE OVERALL
SHEAR STRENGTH: 60000 SINGLE POUNDS PER SQUARE INCH
STARTING EDGE SHAPE: STRAIGHT
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
OVERALL LENGTH1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATION66 COMP 1018 TO 1035 FED STD SINGLE MATERIAL RESPONSE OVERALL
SHEAR STRENGTH60000 SINGLE POUNDS PER SQUARE INCH
STARTING EDGE SHAPESTRAIGHT
OVERALL WIDTH0.375 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
00K220Interchangeable
interchangeable cross-reference
interchangeable
MS20066-2Interchangeable
interchangeable cross-reference
interchangeable
MS20066-544Interchangeable
interchangeable cross-reference
interchangeable
NASM20066Interchangeable
interchangeable cross-reference
interchangeable
OO-K-220Interchangeable
interchangeable cross-reference
interchangeable
MS20066-148Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MB423?
MB423 is a KEY,MACHINE.
What parts can replace MB423?
There are 10 known substitutes for MB423: 00K220, MS20066-2, MS20066-544 and 7 more. Substitute compatibility should be verified for your specific system.
Is MB423 still available?
MB423 is currently cancelled.
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