PartsTable
Technical Data Sheet
K8249 ✓ 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 radius: 1.125 INCHES NOMINAL IN, material: STEEL COMP 1045 OVERALL, overall_width: 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN, overall_height: 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN, overall_length: 1.625 INCHES NOMINAL IN, round_end_length: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-281-8687, 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
K8249
NSN: 5315-00-281-8687
FSC: 5315
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
radius1.125 INCHES NOMINAL IN
materialSTEEL COMP 1045 OVERALL
overall_width0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
overall_height0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
overall_length1.625 INCHES NOMINAL IN
round_end_length0.500 INCHES NOMINAL IN
style_designatorPLAIN
key_chamfer_angle45.0 DEGREES NOMINAL
key_chamfer_length0.031 INCHES NOMINAL IN
starting_edge_shapeCHAMFERED
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-281-8687
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K8249 · 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
KEY CHAMFER ANGLE: 45.0 DEGREES NOMINAL
STARTING EDGE SHAPE: CHAMFERED
ROUND END LENGTH: 0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
RADIUS: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
KEY CHAMFER ANGLE45.0 DEGREES NOMINAL
STARTING EDGE SHAPECHAMFERED
ROUND END LENGTH0.500 INCHES NOMINAL IN
OVERALL HEIGHT0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
OVERALL LENGTH1.625 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
RADIUS1.125 INCHES NOMINAL IN
OVERALL WIDTH0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
MATERIALSTEEL COMP 1045 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
559-552AInterchangeable
interchangeable cross-reference
interchangeable
223288Interchangeable
interchangeable cross-reference
interchangeable
19269HInterchangeable
interchangeable cross-reference
interchangeable
22CR8Interchangeable
interchangeable cross-reference
interchangeable
20RL294Interchangeable
interchangeable cross-reference
interchangeable
0140408-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K8249?
K8249 is a KEY,MACHINE.
What parts can replace K8249?
There are 16 known substitutes for K8249: 559-552A, 223288, 19269H and 13 more. Substitute compatibility should be verified for your specific system.
Is K8249 still available?
K8249 is currently cancelled.
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