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Technical Data Sheet
PartsTable / COMPONENT / 2493773
2493773 ✓ 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 PIN,GROOVED,HEADLESS is a the manufacturer industrial component. Key specifications include diameter: 0.4960 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, material: STEEL COMP 316 OVERALL, overall_length: 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES OUTSIDE DIAMETER, undercut_width: 0.188 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN, first_end_style: CHAMFERED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-043-4594, 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
2493773
NSN: 5315-00-043-4594
FSC: 5315
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
diameter0.4960 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
materialSTEEL COMP 316 OVERALL
overall_length1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES OUTSIDE DIAMETER
undercut_width0.188 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
first_end_styleCHAMFERED
undercut_radius0.120 INCHES NOMINAL IN
effective_length0.835 INCHES NOMINAL IN
style_designatorGROOVE
surface_treatmentPASSIVATE OVERALL
undercut_diameter0.382 INCHES NOMINAL IN
first_end_locationGROOVED END
NSN5315-00-043-4594
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2493773 · 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
•
UNDERCUT DIAMETER: 0.382 INCHES NOMINAL IN
•
UNDERCUT RADIUS: 0.120 INCHES NOMINAL IN
•
FIRST END LOCATION: GROOVED END
•
MATERIAL: STEEL COMP 316 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
UNDERCUT WIDTH: 0.188 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
•
FIRST END TAPER LENGTH: 0.047 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
UNDERCUT DIAMETER0.382 INCHES NOMINAL IN
UNDERCUT RADIUS0.120 INCHES NOMINAL IN
FIRST END LOCATIONGROOVED END
OVERALL LENGTH1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN
MATERIALSTEEL COMP 316 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
UNDERCUT WIDTH0.188 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
FIRST END TAPER LENGTH0.047 INCHES NOMINAL IN
DIAMETER0.4960 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
A-A-413Interchangeable
interchangeable cross-reference
interchangeable
31330Interchangeable
interchangeable cross-reference
interchangeable
24187Interchangeable
interchangeable cross-reference
interchangeable
17720Interchangeable
interchangeable cross-reference
interchangeable
A58961Interchangeable
interchangeable cross-reference
interchangeable
9267Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2493773?
2493773 is a PIN,GROOVED,HEADLESS.
What parts can replace 2493773?
There are 8 known substitutes for 2493773: A-A-413, 31330, 24187 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2493773?
2493773 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-043-4594. 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