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PartsTable / COMPONENT / 300R-721
300R-721 ✓ 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 HOUSING ASSEMBLY,LOWER is a the manufacturer industrial component. Key specifications include guide: NOT INCLUDED, diameter: 0.625 INCHES NOMINAL IN, material: STEEL CUTTING EDGE TIP, flute_type: INTEGRAL, shank_type: STRAIGHT, reamer_type: HELICAL TAPER PIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-232-4103, 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
300R-721
NSN: 3455-00-232-4103
FSC: 3455
CAGE: 09058 — BROWN & SHARPE, INC. DIV PRECISION MEASURING INSTRUMENTS, TESA USA (USA)
SPECIFICATIONS
guideNOT INCLUDED
diameter0.625 INCHES NOMINAL IN
materialSTEEL CUTTING EDGE TIP
flute_typeINTEGRAL
shank_typeSTRAIGHT
reamer_typeHELICAL TAPER PIN
flute_designHELICAL
flute_length6.813 INCHES NOMINAL IN
flute_quantity3
overall_length9.938 INCHES NOMINAL IN
shank_diameter0.625 INCHES NOMINAL IN
helix_directionLEFT-HAND
NSN3455-00-232-4103
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HOUSING ASSEMBLY,LOWER TITLE COMPONENT PN 300R-721 MFR HOUSING ASSEMBLY,LOWER
KEY FEATURES
•
SHANK TYPE: STRAIGHT
•
MATERIAL: STEEL CUTTING EDGE TIP
•
NONDEFINITIVE SPEC/STD DATA: 3 CLASS AND A GRADE AND VIII TYPE
•
DIAMETER: 0.625 INCHES NOMINAL IN
•
HELIX DIRECTION: LEFT-HAND
•
FLUTE QUANTITY: 3
•
FLUTE CUT DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
SHANK TYPESTRAIGHT
MATERIALSTEEL CUTTING EDGE TIP
NONDEFINITIVE SPEC/STD DATA3 CLASS AND A GRADE AND VIII TYPE
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
DIAMETER0.625 INCHES NOMINAL IN
HELIX DIRECTIONLEFT-HAND
FLUTE QUANTITY3
FLUTE CUT DIRECTIONRIGHT-HAND
OVERALL LENGTH9.938 INCHES NOMINAL IN
FLUTE DESIGNHELICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
610697Interchangeable
interchangeable cross-reference
interchangeable
900553Interchangeable
interchangeable cross-reference
interchangeable
25T819D7Interchangeable
interchangeable cross-reference
interchangeable
24233Interchangeable
interchangeable cross-reference
interchangeable
22615Interchangeable
interchangeable cross-reference
interchangeable
B94.2-95 TABLE 25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 300R-721?
300R-721 is a HOUSING ASSEMBLY,LOWER.
What parts can replace 300R-721?
There are 35 known substitutes for 300R-721: 610697, 900553, 25T819D7 and 32 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 300R-721?
300R-721 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-232-4103. 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