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PartsTable / COMPONENT / ANSI C135.4-1979
ANSI C135.4-1979 ✓ 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

The ANSI C135.4-1979 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-407-6409, 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
ANSI C135.4-1979
NSN: 5306-00-407-6409
FSC: 5306
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
Part NumberANSI C135.4-1979
NSN5306-00-407-6409
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ANSI C135.4-1979 · 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: 6.000 INCHES MINIMUM AND 6.125 INCHES MAXIMUM IN
•
EYE WIDTH: 0.500 INCHES NOMINAL IN
•
EYE STOCK DIAMETER: 0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: OVAL, CLOSED
•
THREAD CLASS: 2A A
•
SHANK LENGTH: 10.000 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH6.000 INCHES MINIMUM AND 6.125 INCHES MAXIMUM IN
EYE WIDTH0.500 INCHES NOMINAL IN
EYE STOCK DIAMETER0.625 INCHES NOMINAL IN
STYLE DESIGNATOROVAL, CLOSED
THREAD CLASS2A A
SPECIAL FEATURESFURNISHED W/1 SQUARE NUT
SHANK LENGTH10.000 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH11
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
9060Interchangeable
interchangeable cross-reference
interchangeable
33154Interchangeable
interchangeable cross-reference
interchangeable
50012Interchangeable
interchangeable cross-reference
interchangeable
90/60Interchangeable
interchangeable cross-reference
interchangeable
M24705Interchangeable
interchangeable cross-reference
interchangeable
M24705/1-BN9060Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ANSI C135.4-1979?
ANSI C135.4-1979 is a ANSI C135.4-1979.
What parts can replace ANSI C135.4-1979?
There are 7 known substitutes for ANSI C135.4-1979: 9060, 33154, 50012 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ANSI C135.4-1979?
ANSI C135.4-1979 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-407-6409. 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