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143C661H02 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

143C661H02: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_height: 0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN, head_diameter: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, hole_diameter: 0.045 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN, fastener_length: 0.062 INCHES NOMINAL IN, internal_drive_style: SLOT, end_item_identification: AIR ROUTE SURVEILLANCE RADAR (ARSR3). This part is cataloged in the U.S.

Government catalog under NSN 5305-01-587-0704, 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
143C661H02
NSN: 5305-01-587-0704
FSC: 5305 — Screws
CAGE: 08125 — U S DEPT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION (USA)
SPECIFICATIONS
head_height0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
head_diameter0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
hole_diameter0.045 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN
fastener_length0.062 INCHES NOMINAL IN
internal_drive_styleSLOT
end_item_identificationAIR ROUTE SURVEILLANCE RADAR (ARSR3)
nominal_thread_diameter0.052 INCHES IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-01-587-0704
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 143C661H02 · 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
•
HEAD HEIGHT: 0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.062 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.052 INCHES IN
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HOLE DIAMETER: 0.045 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.085 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN
FASTENER LENGTH0.062 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.052 INCHES IN
INTERNAL DRIVE STYLESLOT
END ITEM IDENTIFICATIONAIR ROUTE SURVEILLANCE RADAR (ARSR3)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HOLE DIAMETER0.045 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN
HEAD DIAMETER0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 143C661H02?
143C661H02 is a SCREW,MACHINE.
What is the NSN for 143C661H02?
143C661H02 is cataloged in the U.S. Government catalog under NSN 5305-01-587-0704. 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.