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Technical Data Sheet
PartsTable / COMPONENT / 4X509
4X509 ✓ 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 STUD,PLAIN is a the manufacturer industrial component. Key specifications include outside_diameter: 1.422 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 1.255 INCHES NOMINAL IN, cross-sectional_height: 0.031 INCHES NOMINAL IN, cross-sectional_shape_style: EMI. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-285-3901, 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
4X509
NSN: 5307-00-285-3901
FSC: 5307
CAGE: 63734 — KAITLIN CORP (USA)
SPECIFICATIONS
outside_diameter1.422 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter1.255 INCHES NOMINAL IN
cross-sectional_height0.031 INCHES NOMINAL IN
cross-sectional_shape_styleEMI
NSN5307-00-285-3901
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4X509 · 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 QUANTITY PER INCH: 13 STUD THREAD
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) STUD THREAD
•
NOMINAL THREAD SIZE: 0.500 INCHES NUT THREAD IN
•
THREAD LENGTH: 0.875 INCHES MAXIMUM STUD THREAD IN
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH13 STUD THREAD
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) STUD THREAD
NOMINAL THREAD SIZE0.500 INCHES NUT THREAD IN
THREAD LENGTH0.875 INCHES MAXIMUM STUD THREAD IN
THREAD QUANTITY PER INCH20 NUT THREAD
THREAD LENGTH0.688 INCHES MAXIMUM NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
OVERALL LENGTH2.125 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
NOMINAL THREAD SIZE0.500 INCHES STUD THREAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
41006889Interchangeable
interchangeable cross-reference
interchangeable
7RT2447Interchangeable
interchangeable cross-reference
interchangeable
321669Interchangeable
interchangeable cross-reference
interchangeable
12009324Interchangeable
interchangeable cross-reference
interchangeable
4X509Interchangeable
interchangeable cross-reference
interchangeable
2066163Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4X509?
4X509 is a STUD,PLAIN.
What parts can replace 4X509?
There are 9 known substitutes for 4X509: 41006889, 7RT2447, 321669 and 6 more. Substitute compatibility should be verified for your specific system.
Is 4X509 still available?
4X509 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026