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72803 — DISK,CLUTCH,VEHICULAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

72803: DISK,CLUTCH,VEHICULAR.

The DISK,CLUTCH,VEHICULAR is a the manufacturer industrial component. Key specifications include disk_type: EXTERNAL TEETH, design_type: DRY, flexibility: RIGID, disk_material: STEEL, teeth_quantity_per_disk: 60. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-358-6518, 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
72803
NSN: 5306-00-358-6518
NIINs: 003586518, 004358065, 016859892
FSC: 5306 — Bolts
CAGE: 54123 — COLSON CORP THE (USA)
SPECIFICATIONS
disk_typeEXTERNAL TEETH
design_typeDRY
flexibilityRIGID
disk_materialSTEEL
teeth_quantity_per_disk60
NSN5306-00-358-6518
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 72803 · 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
•
NECK LENGTH: 0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.562 INCHES NOMINAL IN
•
FASTENER LENGTH: 9.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.125 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
MINIMUM TENSILE STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 18
TECHNICAL CHARACTERISTICS
NECK LENGTH0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
HEAD HEIGHT0.562 INCHES NOMINAL IN
FASTENER LENGTH9.500 INCHES NOMINAL IN
THREAD LENGTH1.125 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
THREAD CLASS2A A
THREAD QUANTITY PER INCH18
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 1
FF-B-584Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 72803?
72803 is a DISK,CLUTCH,VEHICULAR.
What parts can replace 72803?
There is 1 known substitute for 72803: FF-B-584. Substitute compatibility should be verified for your specific system.
What is the NSN for 72803?
72803 is cataloged in the U.S. Government catalog under NSN 5306-00-358-6518. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.