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Technical Data Sheet
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56779 ✓ 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,MILLING,END is a the manufacturer industrial component. Key specifications include diameter: 0.875 INCHES NOMINAL IN, material: STEEL, cut_length: 1.875 INCHES NOMINAL IN, shank_type: STRAIGHT, design_form: SINGLE END, flute_design: HELICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-275-1943, 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
56779
NSN: 3455-00-275-1943
FSC: 3455
CAGE: 42970 — LEAR SIEGLER INC NATIONAL TWIST DRILL AND TOOL DIV (USA)
SPECIFICATIONS
diameter0.875 INCHES NOMINAL IN
materialSTEEL
cut_length1.875 INCHES NOMINAL IN
shank_typeSTRAIGHT
design_formSINGLE END
flute_designHELICAL
overall_length4.125 INCHES NOMINAL IN
shank_diameter0.875 INCHES NOMINAL IN
helix_directionRIGHT-HAND
special_featuresSQUARE END
features_providedCENTER CUTTING
cutting_rotation_directionRIGHT-HAND
NSN3455-00-275-1943
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUTTER,MILLING,END TITLE COMPONENT PN 56779 MFR CUTTER,MILLING,END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
56777Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 53Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 50Interchangeable
interchangeable cross-reference
interchangeable
AC16-3Interchangeable
interchangeable cross-reference
interchangeable
GGGC755TYPE6CLASS4STYLEBInterchangeable
interchangeable cross-reference
interchangeable
AC22-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56779?
56779 is a CUTTER,MILLING,END.
What parts can replace 56779?
There are 20 known substitutes for 56779: 56777, B94.19 TABLE 53, B94.19 TABLE 50 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 56779?
56779 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-275-1943. 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