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Technical Data Sheet
PartsTable / COMPONENT / 1455-B
1455-B ✓ 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 REDUCING WASHER,KNOCKOUT is a the manufacturer industrial component. Key specifications include diameter: 4.2500 INCHES NOMINAL IN, material: LUBRICANT LUBRICATION, design_type: FLAT, corner_shape: SQUARE ALL CORNERS, surface_finish: 16.0 MICROINCHES LEFT SIDE, outside_diameter: 4.7440 INCHES MINIMUM AND 4.7460 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5975-00-280-9181, 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
1455-B
NSN: 5975-00-280-9181
FSC: 5975
CAGE: 33342 — ATLAS TECHNOLOGIES INC (USA)
SPECIFICATIONS
diameter4.2500 INCHES NOMINAL IN
materialLUBRICANT LUBRICATION
design_typeFLAT
corner_shapeSQUARE ALL CORNERS
surface_finish16.0 MICROINCHES LEFT SIDE
outside_diameter4.7440 INCHES MINIMUM AND 4.7460 INCHES MAXIMUM IN
style_designatorROUND
overall_thickness0.3390 INCHES MINIMUM AND 0.3410 INCHES MAXIMUM IN
center_hole_shape_styleROUND
conduit_size_accommodated0.750 INCHES NOMINAL IN
cross-sectional_shape_styleRECTANGULAR
knockout_size_for_which_designed2.000 INCHES NOMINAL IN
NSN5975-00-280-9181
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REDUCING WASHER,KNOCKOUT TITLE COMPONENT PN 1455-B MFR REDUCING WASHER,KNOCKO
KEY FEATURES
•
MATERIAL: STEEL
•
OUTSIDE DIAMETER: 2.750 INCHES NOMINAL IN
•
CONDUIT SIZE ACCOMMODATED: 0.750 INCHES NOMINAL IN
•
DESIGN TYPE: FLAT
•
KNOCKOUT SIZE FOR WHICH DESIGNED: 2.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
OUTSIDE DIAMETER2.750 INCHES NOMINAL IN
CONDUIT SIZE ACCOMMODATED0.750 INCHES NOMINAL IN
DESIGN TYPEFLAT
KNOCKOUT SIZE FOR WHICH DESIGNED2.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
13411Interchangeable
interchangeable cross-reference
interchangeable
4TZ2061DInterchangeable
interchangeable cross-reference
interchangeable
172-309Interchangeable
interchangeable cross-reference
interchangeable
5473078Interchangeable
interchangeable cross-reference
interchangeable
B107.39 TY2CL1Interchangeable
interchangeable cross-reference
interchangeable
DA22Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1455-B?
1455-B is a REDUCING WASHER,KNOCKOUT.
What parts can replace 1455-B?
There are 16 known substitutes for 1455-B: 13411, 4TZ2061D, 172-309 and 13 more. Substitute compatibility should be verified for your specific system.
Is 1455-B still available?
1455-B is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026