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Technical Data Sheet
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3000-0312 — COUNTERBORE,MACHINE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3000-0312: COUNTERBORE,MACHINE.

The COUNTERBORE,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_style: STRAIGHT ROUND, overall_length: 3.812 INCHES NOMINAL IN, shank_diameter: 0.297 INCHES NOMINAL IN, cutting_end_style: INTERCHANGEABLE PILOT, features_provided: REPLACEABLE PILOT. This part is cataloged in the U.S.

Government catalog under NSN 5133-00-595-8256, 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
3000-0312
NSN: 5133-00-595-8256
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_styleSTRAIGHT ROUND
flute_quantity3
overall_length3.812 INCHES NOMINAL IN
shank_diameter0.297 INCHES NOMINAL IN
cutting_end_styleINTERCHANGEABLE PILOT
features_providedREPLACEABLE PILOT
nominal_cutting_diameter0.3125 INCHES IN
pilot_hole_nominal_diameter0.094 INCHES IN
NSN5133-00-595-8256
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUNTERBORE,MACHINE TITLE COMPONENT PN 3000-0312 MFR COUNTERBORE,MACHINE
KEY FEATURES
•
SHANK DIAMETER: 0.297 INCHES NOMINAL IN
•
CUTTING END STYLE: INTERCHANGEABLE PILOT
•
NOMINAL CUTTING DIAMETER: 0.3125 INCHES IN
•
FEATURES PROVIDED: REPLACEABLE PILOT
•
SHANK STYLE: STRAIGHT ROUND
•
PILOT HOLE NOMINAL DIAMETER: 0.094 INCHES IN
•
FLUTE QUANTITY: 3
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.297 INCHES NOMINAL IN
CUTTING END STYLEINTERCHANGEABLE PILOT
OVERALL LENGTH3.812 INCHES NOMINAL IN
NOMINAL CUTTING DIAMETER0.3125 INCHES IN
FEATURES PROVIDEDREPLACEABLE PILOT
SHANK STYLESTRAIGHT ROUND
PILOT HOLE NOMINAL DIAMETER0.094 INCHES IN
FLUTE QUANTITY3
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
50702Reference document
Same NSN cross-reference
Reference document — Secondary reference
879 5/16Reference document
Same NSN cross-reference
Reference document — Secondary reference
C46425Reference 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 3000-0312?
3000-0312 is a COUNTERBORE,MACHINE.
What parts can replace 3000-0312?
There are 3 known substitutes for 3000-0312: 50702, 879 5/16, C46425. Substitute compatibility should be verified for your specific system.
What is the NSN for 3000-0312?
3000-0312 is cataloged in the U.S. Government catalog under NSN 5133-00-595-8256. 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.