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Technical Data Sheet

878 7/16 — COUNTERBORE,MACHINE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

878 7/16: COUNTERBORE,MACHINE.

The COUNTERBORE,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_style: STANDARD TAPER W/TANG, overall_length: 4.062 INCHES NOMINAL IN, pilot_diameter: 0.188 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, cutting_end_style: INTERCHANGEABLE PILOT, features_provided: REPLACEABLE PILOT. This part is cataloged in the U.S.

Government catalog under NSN 5133-00-232-9251, 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
878 7/16
NSN: 5133-00-232-9251
FSC: 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
CAGE: 13130 — CLEVELAND TWIST DRILL CO DIV OF GREENFIELD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_styleSTANDARD TAPER W/TANG
flute_quantity3
overall_length4.062 INCHES NOMINAL IN
pilot_diameter0.188 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
cutting_end_styleINTERCHANGEABLE PILOT
features_providedREPLACEABLE PILOT
nominal_cutting_diameter0.4375 INCHES IN
pilot_hole_nominal_diameter0.156 INCHES IN
taper_shank_size_designator1 MORSE
NSN5133-00-232-9251
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUNTERBORE,MACHINE TITLE COMPONENT PN 878 7/16 MFR COUNTERBORE,MACHINE
KEY FEATURES
•
CUTTING END STYLE: INTERCHANGEABLE PILOT
•
TAPER SHANK SIZE DESIGNATOR: 1 MORSE
•
NOMINAL CUTTING DIAMETER: 0.4375 INCHES IN
•
FEATURES PROVIDED: REPLACEABLE PILOT
•
PILOT DIAMETER: 0.188 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
SHANK STYLE: STANDARD TAPER W/TANG
•
PILOT HOLE NOMINAL DIAMETER: 0.156 INCHES IN
TECHNICAL CHARACTERISTICS
CUTTING END STYLEINTERCHANGEABLE PILOT
TAPER SHANK SIZE DESIGNATOR1 MORSE
OVERALL LENGTH4.062 INCHES NOMINAL IN
NOMINAL CUTTING DIAMETER0.4375 INCHES IN
FEATURES PROVIDEDREPLACEABLE PILOT
PILOT DIAMETER0.188 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SHANK STYLESTANDARD TAPER W/TANG
PILOT HOLE NOMINAL DIAMETER0.156 INCHES IN
FLUTE QUANTITY3
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5133-00-001-1296 5133-00-001-1298 5133-00-005-2258 5133-00-005-7727 5133-00-005-8710 5133-00-005-8711 5133-00-005-8712 5133-00-005-8713
SUBSTITUTES & CROSS-REFERENCES 1
C46479Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 878 7/16?
878 7/16 is a COUNTERBORE,MACHINE.
What parts can replace 878 7/16?
There is 1 known substitute for 878 7/16: C46479. Substitute compatibility should be verified for your specific system.
What is the NSN for 878 7/16?
878 7/16 is cataloged in the U.S. Government catalog under NSN 5133-00-232-9251. 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.