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PartsTable / COMPONENT / AT420D-4-10
AT420D-4-10 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The CUTTER,COUNTERSINK is a the manufacturer industrial component. Key specifications include shank_style: EXTERNALLY THREADED, body_diameter: 0.438 INCHES NOMINAL IN, included_angle: 100.0 DEGREES NOMINAL, pilot_diameter: 0.193 INCHES NOMINAL IN, thread_quantity: 28 PER INCH, cutting_end_style: STRAIGHT FLUTE BLUNT END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5133-01-397-3020, 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
AT420D-4-10
NSN: 5133-01-397-3020
FSC: 5133
CAGE: 00784 — SNAP-ON INCORPORATED DBA SNAP-ON TOOLS DIV SNAP-ON INDUSTRIAL, SPECIAL PRODUCTS DIVISION (USA)
SPECIFICATIONS
shank_styleEXTERNALLY THREADED
body_diameter0.438 INCHES NOMINAL IN
flute_quantity3
included_angle100.0 DEGREES NOMINAL
pilot_diameter0.193 INCHES NOMINAL IN
thread_quantity28 PER INCH
cutting_end_styleSTRAIGHT FLUTE BLUNT END
features_providedINTEGRAL PILOT
nominal_thread_diameter0.250 INCHES IN
thread_series_designatorUNF
NSN5133-01-397-3020
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUTTER,COUNTERSINK TITLE COMPONENT PN AT420D-4-10 MFR CUTTER,COUNTERSINK
KEY FEATURES
•
THREAD QUANTITY: 28 PER INCH
•
CUTTING END STYLE: STRAIGHT FLUTE BLUNT END
•
SHANK STYLE: EXTERNALLY THREADED
•
INCLUDED ANGLE: 100.0 DEGREES NOMINAL
•
PILOT DIAMETER: 0.193 INCHES NOMINAL IN
•
BODY DIAMETER: 0.438 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
FEATURES PROVIDED: INTEGRAL PILOT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY28 PER INCH
CUTTING END STYLESTRAIGHT FLUTE BLUNT END
SHANK STYLEEXTERNALLY THREADED
INCLUDED ANGLE100.0 DEGREES NOMINAL
PILOT DIAMETER0.193 INCHES NOMINAL IN
BODY DIAMETER0.438 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDINTEGRAL PILOT
THREAD SERIES DESIGNATORUNF
FLUTE QUANTITY3
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
A-A-58076A TY2STASZFInterchangeable
interchangeable cross-reference
interchangeable
A-A-58076 TY2STASZFInterchangeable
interchangeable cross-reference
interchangeable
15801Interchangeable
interchangeable cross-reference
interchangeable
15784Interchangeable
interchangeable cross-reference
interchangeable
A-A-58076 CL2STAInterchangeable
interchangeable cross-reference
interchangeable
MIL-H-4081Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT420D-4-10?
AT420D-4-10 is a CUTTER,COUNTERSINK.
What parts can replace AT420D-4-10?
There are 13 known substitutes for AT420D-4-10: A-A-58076A TY2STASZF, A-A-58076 TY2STASZF, 15801 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AT420D-4-10?
AT420D-4-10 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5133-01-397-3020. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026