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450638 — MICROCIRCUIT,DIGITAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

450638: MICROCIRCUIT,DIGITAL.

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include guide: NOT INCLUDED, diameter: 0.375 INCHES NOMINAL IN, material: STEEL CUTTING EDGE TIP, flute_type: INTEGRAL, shank_type: MORSE TAPER, reamer_type: JOBBERS. This part is cataloged in the U.S.

Government catalog under NSN 3455-00-236-3637, 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
450638
NSN: 3455-00-236-3637
NIINs: 002363637, 004659587, 010651463
FSC: 3455 — Cutting Tools for Machine Tools
CAGE: 71485 — UNION BUTTERFIELD CORP P O BOX 9000 CRYSTAL LAKE IL 60039 (USA)
SPECIFICATIONS
guideNOT INCLUDED
diameter0.375 INCHES NOMINAL IN
materialSTEEL CUTTING EDGE TIP
flute_typeINTEGRAL
shank_typeMORSE TAPER
reamer_typeJOBBERS
flute_designSTRAIGHT
flute_length2.500 INCHES NOMINAL IN
flute_quantity6
overall_length5.813 INCHES NOMINAL IN
features_providedHERMETICALLY SEALED AND PROGRAMMED
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
NSN3455-00-236-3637
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN 450638 MFR MICROCIRCUIT,DIGITAL
KEY FEATURES
•
FLUTE DESIGN: STRAIGHT
•
FLUTE CUT DIRECTION: RIGHT-HAND
•
SHANK TYPE: MORSE TAPER
•
GUIDE: NOT INCLUDED
•
FLUTE LENGTH: 2.500 INCHES NOMINAL IN
•
DIAMETER: 0.375 INCHES NOMINAL IN
•
SHANK TAPER NUMBER: 1
TECHNICAL CHARACTERISTICS
FLUTE DESIGNSTRAIGHT
FLUTE CUT DIRECTIONRIGHT-HAND
SHANK TYPEMORSE TAPER
GUIDENOT INCLUDED
FLUTE LENGTH2.500 INCHES NOMINAL IN
DIAMETER0.375 INCHES NOMINAL IN
OVERALL LENGTH5.813 INCHES NOMINAL IN
SHANK TAPER NUMBER1
SPECIFICATION/STANDARD DATA80204-B94.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
FLUTE TYPEINTEGRAL
SUBSTITUTES & CROSS-REFERENCES 10
506.3750Reference document
Same NSN cross-reference
Reference document — Secondary reference
GGG-R-180Reference document
Same NSN cross-reference
Reference document — Secondary reference
21343Reference document
Same NSN cross-reference
Reference document — Secondary reference
ASME B94.2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
20081Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
628-3/8Reference 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 450638?
450638 is a MICROCIRCUIT,DIGITAL.
What parts can replace 450638?
There are 10 known substitutes for 450638: 506.3750, GGG-R-180, 21343 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 450638?
450638 is cataloged in the U.S. Government catalog under NSN 3455-00-236-3637. 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.