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6566K83 — 6566K83

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6566K83: 6566K83.

The 6566K83 is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.136 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, fastener_length: 0.157 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND, countersink_angle: 60.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-115-6862, 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
6566K83
NSN: 5305-00-115-6862
NIINs: 001156862, 011886572
FSC: 5305 — Screws
CAGE: 97424 — AMETEK INC DIV AEROSPACE AND DEFENSE (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.136 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
fastener_length0.157 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle60.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
nominal_thread_diameter0.086 INCHES IN
thread_quantity_per_inch56
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-115-6862
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6566K83 · 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
•
FASTENER LENGTH: 0.157 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
COUNTERSINK ANGLE: 60.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 56
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.157 INCHES MINIMUM AND 0.167 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.086 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
COUNTERSINK ANGLE60.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
THREAD CLASS2A A
THREAD QUANTITY PER INCH56
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD DIAMETER0.136 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
6566K83P005Reference document
Same NSN cross-reference
Reference document — Secondary 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 6566K83?
6566K83 is a 6566K83.
What parts can replace 6566K83?
There is 1 known substitute for 6566K83: 6566K83P005. Substitute compatibility should be verified for your specific system.
What is the NSN for 6566K83?
6566K83 is cataloged in the U.S. Government catalog under NSN 5305-00-115-6862. 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.