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RW4-1 ✓ 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 material: STEEL, design_type: FLAT, conduit_size_accommodated: 0.500 INCHES NOMINAL IN, knockout_size_for_which_designed: 1.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5975-00-265-7773, 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
RW4-1
NSN: 5975-00-265-7773
FSC: 5975
CAGE: 14046 — A-1 CONDUIT FITTINGS CORP (USA)
SPECIFICATIONS
materialSTEEL
design_typeFLAT
conduit_size_accommodated0.500 INCHES NOMINAL IN
knockout_size_for_which_designed1.250 INCHES NOMINAL IN
NSN5975-00-265-7773
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REDUCING WASHER,KNOCKOUT TITLE COMPONENT PN RW4-1 MFR REDUCING WASHER,KNOCKO
KEY FEATURES
•
KNOCKOUT SIZE FOR WHICH DESIGNED: 1.250 INCHES NOMINAL IN
•
DESIGN TYPE: FLAT
•
MATERIAL: STEEL
•
CONDUIT SIZE ACCOMMODATED: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
KNOCKOUT SIZE FOR WHICH DESIGNED1.250 INCHES NOMINAL IN
DESIGN TYPEFLAT
MATERIALSTEEL
CONDUIT SIZE ACCOMMODATED0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
D225K25KInterchangeable
interchangeable cross-reference
interchangeable
1368Interchangeable
interchangeable cross-reference
interchangeable
RW4SInterchangeable
interchangeable cross-reference
interchangeable
R4Interchangeable
interchangeable cross-reference
interchangeable
RW1007Interchangeable
interchangeable cross-reference
interchangeable
251528Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RW4-1?
RW4-1 is a REDUCING WASHER,KNOCKOUT.
What parts can replace RW4-1?
There are 25 known substitutes for RW4-1: D225K25K, 1368, RW4S and 22 more. Substitute compatibility should be verified for your specific system.
Is RW4-1 still available?
RW4-1 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