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PartsTable / COMPONENT / C494
C494 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: STEEL OVERALL, body_style: THRU-HOLE MOUNT, head_style: SQUARE, shell_type: SOLID, head_height: 0.750 INCHES NOMINAL IN, pin_diameter: 0.188 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-254-9660, 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
C494
NSN: 5306-00-254-9660
FSC: 5306
CAGE: 35311 — AMERICAN STANDARD INC WESTINGHOUSE AIR BRAKE CO DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleTHRU-HOLE MOUNT
head_styleSQUARE
shell_typeSOLID
head_height0.750 INCHES NOMINAL IN
pin_diameter0.188 INCHES NOMINAL IN
thread_class2A A
terminal_typeTAB, SOLDER LUG SINGLE MATING END SINGLE CONTACT GROUPING
thread_length1.750 INCHES MINIMUM IN
overall_length8.125 INCHES NOMINAL IN
shell_materialSTEEL
fastener_length8.625 INCHES NOMINAL IN
NSN5306-00-254-9660
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C494 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 1.750 INCHES MINIMUM IN
•
HEAD STYLE: SQUARE
•
WIDTH BETWEEN FLATS: 2.500 INCHES NOMINAL IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.312 INCHES NOMINAL FIRST HOLE IN
•
FEATURES PROVIDED: UNFINISHED HEAD
•
THREAD SERIES DESIGNATOR: UN
•
MATERIAL: STEEL OVERALL
•
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 8.188 INCHES NOMINAL FIRST HOLE IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH1.750 INCHES MINIMUM IN
HEAD STYLESQUARE
WIDTH BETWEEN FLATS2.500 INCHES NOMINAL IN
SHANK UNTHREADED HOLE DIAMETER0.312 INCHES NOMINAL FIRST HOLE IN
FEATURES PROVIDEDUNFINISHED HEAD
THREAD SERIES DESIGNATORUN
MATERIALSTEEL OVERALL
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER8.188 INCHES NOMINAL FIRST HOLE IN
THREAD QUANTITY PER INCH8
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
371-0371-010Interchangeable
interchangeable cross-reference
interchangeable
C494Interchangeable
interchangeable cross-reference
interchangeable
1FJ42Interchangeable
interchangeable cross-reference
interchangeable
JC494Interchangeable
interchangeable cross-reference
interchangeable
AS6018Interchangeable
interchangeable cross-reference
interchangeable
H8226Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C494?
C494 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace C494?
There are 6 known substitutes for C494: 371-0371-010, C494, 1FJ42 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C494?
C494 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-254-9660. 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