PartsTable
Technical Data Sheet
6406521 ✓ 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 BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DEE, head_height: 0.054 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.500 INCHES NOMINAL IN, thread_length: 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM 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 5306-00-059-5502, 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
6406521
NSN: 5306-00-059-5502
FSC: 5306
CAGE: 30842 — KIT PACK CO., INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDEE
head_height0.054 INCHES NOMINAL IN
thread_class3A A
head_diameter0.500 INCHES NOMINAL IN
thread_length0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.075 INCHES MINIMUM AND 1.085 INCHES MAXIMUM IN
shoulder_length0.836 INCHES MINIMUM AND 0.846 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.305 INCHES MINIMUM AND 0.306 INCHES MAXIMUM FIRST SHOULDER IN
nominal_thread_diameter0.250 INCHES IN
NSN5306-00-059-5502
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6406521 · 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 DIRECTION: RIGHT-HAND
THREAD CLASS: 3A A
HEAD HEIGHT: 0.054 INCHES NOMINAL IN
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 1.000 INCHES NOMINAL FIRST HOLE IN
HEAD DIAMETER: 0.500 INCHES NOMINAL IN
SHOULDER DIAMETER: 0.305 INCHES MINIMUM AND 0.306 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH: 0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A A
HEAD HEIGHT0.054 INCHES NOMINAL IN
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.000 INCHES NOMINAL FIRST HOLE IN
HEAD DIAMETER0.500 INCHES NOMINAL IN
SHOULDER DIAMETER0.305 INCHES MINIMUM AND 0.306 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.155 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SHANK UNTHREADED HOLE DIAMETER0.065 INCHES NOMINAL FIRST HOLE IN
THREAD QUANTITY PER INCH28
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
L74982Upgraded Successor
successor cross-reference
successor
6406521Upgraded Successor
successor cross-reference
successor
2702-4BUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 6406521?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 6406521?
6406521 is a BOLT,SHOULDER.
What parts can replace 6406521?
There are 3 known substitutes for 6406521: L74982, 6406521, 2702-4B. Substitute compatibility should be verified for your specific system.
What is the NSN for 6406521?
6406521 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-059-5502. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 6406521