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PartsTable / COMPONENT / 4254773
4254773 ✓ 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 WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 1.396 INCHES MINIMUM AND 1.416 INCHES MAXIMUM IN, outside_diameter: 2.173 INCHES MINIMUM AND 2.203 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN, internal_straight_key_width: 0.176 INCHES NOMINAL IN, material_document_and_classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-151-5483, 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
4254773
NSN: 5310-00-151-5483
FSC: 5310
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
hole_diameter1.396 INCHES MINIMUM AND 1.416 INCHES MAXIMUM IN
outside_diameter2.173 INCHES MINIMUM AND 2.203 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.176 INCHES NOMINAL IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
distance_from_centerline_to_top_of_internal_key0.576 INCHES MINIMUM AND 0.596 INCHES MAXIMUM IN
NSN5310-00-151-5483
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4254773 · 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
•
HOLE DIAMETER: 1.396 INCHES MINIMUM AND 1.416 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
MATERIAL THICKNESS: 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.173 INCHES MINIMUM AND 2.203 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.576 INCHES MINIMUM AND 0.596 INCHES MAXIMUM IN
•
INTERNAL KEY QUANTITY: 1
•
MATERIAL: STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER1.396 INCHES MINIMUM AND 1.416 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL THICKNESS0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.173 INCHES MINIMUM AND 2.203 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.576 INCHES MINIMUM AND 0.596 INCHES MAXIMUM IN
INTERNAL KEY QUANTITY1
MATERIALSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
INTERNAL STRAIGHT KEY WIDTH0.176 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
10526Interchangeable
interchangeable cross-reference
interchangeable
1201PInterchangeable
interchangeable cross-reference
interchangeable
SL6054PC27Interchangeable
interchangeable cross-reference
interchangeable
SL5666PC27Interchangeable
interchangeable cross-reference
interchangeable
516BInterchangeable
interchangeable cross-reference
interchangeable
ER63931AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4254773?
4254773 is a WASHER,KEY.
What parts can replace 4254773?
There are 16 known substitutes for 4254773: 10526, 1201P, SL6054PC27 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4254773?
4254773 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-151-5483. 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