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PartsTable / COMPONENT / KY407757
KY407757 ✓ 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,WOODRUFF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 2330 OR STEEL COMP 2340 OVERALL, thickness: 0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN, key_height: 0.167 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN, circle_diameter: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL, style_designator: ROUND BOTTOM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-027-1089, 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
KY407757
NSN: 5315-00-027-1089
FSC: 5315
CAGE: 01843 — AMBAC INTERNATIONAL CORPORATION DIV AMBAC INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL COMP 2330 OR STEEL COMP 2340 OVERALL
thickness0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
key_height0.167 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
circle_diameter0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeSTRAIGHT
key_size_designationWOODRUFF 213
NSN5315-00-027-1089
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: KY407757 · 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
•
THICKNESS: 0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF 213
•
CIRCLE DIAMETER: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.167 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 2330 OR STEEL COMP 2340 OVERALL
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: ROUND BOTTOM
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF 213
CIRCLE DIAMETER0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
KEY HEIGHT0.167 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
MATERIALSTEEL COMP 2330 OR STEEL COMP 2340 OVERALL
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORROUND BOTTOM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
SM-B-433286Interchangeable
interchangeable cross-reference
interchangeable
100106Interchangeable
interchangeable cross-reference
interchangeable
3U40203-01Interchangeable
interchangeable cross-reference
interchangeable
171542-001Interchangeable
interchangeable cross-reference
interchangeable
0FHP0255Interchangeable
interchangeable cross-reference
interchangeable
0270Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is KY407757?
KY407757 is a KEY,WOODRUFF.
What parts can replace KY407757?
There are 16 known substitutes for KY407757: SM-B-433286, 100106, 3U40203-01 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for KY407757?
KY407757 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-027-1089. 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