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Technical Data Sheet
PartsTable / COMPONENT / 81564
81564 ✓ Verified by PartsTable
Jumbo · 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 DISK,VALVE is a Jumbo industrial component. Key specifications include material: STEEL, overall_height: 0.390 INCHES NOMINAL IN, shank_diameter: 0.062 INCHES NOMINAL IN, flange_diameter: 0.250 INCHES NOMINAL IN, flange_seat_to_disk_end_height: 0.290 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-639-7127, 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
81564
NSN: 5305-00-639-7127
FSC: 5305
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialSTEEL
overall_height0.390 INCHES NOMINAL IN
shank_diameter0.062 INCHES NOMINAL IN
flange_diameter0.250 INCHES NOMINAL IN
flange_seat_to_disk_end_height0.290 INCHES NOMINAL IN
NSN5305-00-639-7127
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 81564 · Jumbo ⚠ 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
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD SERIES DESIGNATOR: UNF
•
FIRST DIAMETER FROM HEAD: 0.093 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.312 INCHES NOMINAL IN
•
THREAD CLASS: 3A A
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.025 INCHES NOMINAL IN
•
HEAD STYLE: FILLISTER
•
THREAD QUANTITY PER INCH: 40
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLESLOT
THREAD SERIES DESIGNATORUNF
FIRST DIAMETER FROM HEAD0.093 INCHES NOMINAL IN
HEAD DIAMETER0.312 INCHES NOMINAL IN
THREAD CLASS3A A
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.025 INCHES NOMINAL IN
HEAD STYLEFILLISTER
THREAD QUANTITY PER INCH40
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.406 INCHES NOMINAL IN
SURFACE TREATMENTNICKEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
81564Interchangeable
interchangeable cross-reference
interchangeable
30694Interchangeable
interchangeable cross-reference
interchangeable
30694 PIECE 10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81564?
81564 is a DISK,VALVE manufactured by Jumbo.
What parts can replace 81564?
There are 3 known substitutes for 81564: 81564, 30694, 30694 PIECE 10. Substitute compatibility should be verified for your specific system.
Is 81564 still available?
81564 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