PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56777Cutter,milling,end

Lear Siegler Inc National Twist Drill and Tool Div · NSN 3455-00-320-9906 · FSC 3455 · No Item Name Available
Verified by PartsTable
NSN 3455-00-320-9906 — this item is cataloged by the U.S. Government under National Stock Number 3455-00-320-9906. Primary manufacturer part number: 56777.
Features
  • Cutter,milling,end — FSC 3455
  • Cutting Rotation Direction: RIGHT-HAND
  • Cut Length: 1.625 INCHES NOMINAL IN
  • Shank Type: FLATTED STRAIGHT
  • Flute Design: HELICAL
  • Helix Direction: RIGHT-HAND
  • Material: STEEL
  • Specification/standard Data: 05047-B94.19 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Applications requiring Steel construction
General Description

The Cutter,milling,end, cataloged under National Stock Number 3455-00-320-9906, is classified within Federal Supply Class 3455 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Lear Siegler Inc National Twist Drill and Tool Div. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3455-00-320-9906
Primary Part Number56777
Item NameCutter,milling,end
FSC / FSG3455 / 34 — No Item Name Available
ManufacturerLear Siegler Inc National Twist Drill and Tool Div
StatusCANCELLED
Cutting Rotation DirectionRIGHT-HAND
Cut Length1.625 INCHES NOMINAL IN
Shank TypeFLATTED STRAIGHT
Flute DesignHELICAL
Helix DirectionRIGHT-HAND
MaterialSTEEL
Specification/standard Data05047-B94.19 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Diameter0.750 INCHES NOMINAL IN
Design FormSINGLE END
Shank Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
3455-00-275-1943TABLE50, D1IN INTERCHANGEABLE
Cutter,milling,end
The American Society of Mechanical Engineers
3455-00-394-9975 INTERCHANGEABLE
Cutter,milling,end
3455-01-006-092640223 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
3455-01-050-72851747-0750 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
3455-01-148-4686716-042510 INTERCHANGEABLE
Cutter,milling,end
Doall Baltimore Company
3455-01-148-469040162 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
3455-01-168-254841268 INTERCHANGEABLE
Cutter,milling,end
Kennametal Inc. Div Kennametal Industrial Products Group
6685-01-642-057256777 INTERCHANGEABLE
Thermowell
Rdf Corporation
5985-01-645-345456777 INTERCHANGEABLE
Antenna
Sabre Industries, Inc.
Cross-Reference Index
Part NumberManufacturer
56777 Lear Siegler Inc National Twist Drill and Tool Div (USA)
B94.19 TABLE 53 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
B94.19 TABLE 50 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
3455-00-275-1943INTERCHANGEABLE
CUTTER,MILLING,END
TABLE50, D1IN
3455-00-394-9975INTERCHANGEABLE
CUTTER,MILLING,END
3455-01-006-0926INTERCHANGEABLE
CUTTER,MILLING,END
40223
3455-01-050-7285INTERCHANGEABLE
CUTTER,MILLING,END
1747-0750
3455-01-148-4686INTERCHANGEABLE
CUTTER,MILLING,END
716-042510
3455-01-148-4690INTERCHANGEABLE
CUTTER,MILLING,END
40162
3455-01-168-2548INTERCHANGEABLE
CUTTER,MILLING,END
41268
6685-01-642-0572INTERCHANGEABLE
THERMOWELL
56777
5985-01-645-3454INTERCHANGEABLE
ANTENNA
56777

Frequently Asked Questions

What is NSN 3455-00-320-9906?

NSN 3455-00-320-9906 is a Cutter,milling,end, manufactured by Lear Siegler Inc National Twist Drill and Tool Div, classified under FSC 3455 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3455-00-320-9906?

NSN 3455-00-320-9906 has 3 cross-referenced part numbers: 56777 (Lear Siegler Inc National Twist Drill and Tool Div), B94.19 TABLE 53 (American National Standards Institute Incorporated Dba American National Standards Institute), B94.19 TABLE 50 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 3455-00-320-9906?

There are 9 known substitutes for 3455-00-320-9906: 3455-00-275-1943, 3455-00-394-9975, 3455-01-006-0926 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56777?

Key specifications for 56777: Cutting Rotation Direction: RIGHT-HAND; Cut Length: 1.625 INCHES NOMINAL IN; Shank Type: FLATTED STRAIGHT; Flute Design: HELICAL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3455-00-320-9906 still in active supply?

NSN 3455-00-320-9906 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com