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302657 ✓ 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 RETAINER,SPEED BRAKE is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,MIL-S-6050. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-398-8178, 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
302657
NSN: 4320-00-398-8178
FSC: 4320
CAGE: 93232 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS WRIGHT ENGINEERED PUMP DIVISION USE CAGE CODE 0UBG9 FOR CATALOGING (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,MIL-S-6050
NSN4320-00-398-8178
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RETAINER,SPEED BRAKE TITLE COMPONENT PN 302657 MFR RETAINER,SPEED BRAKE
KEY FEATURES
•
MATERIAL: COPPER ALLOY
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.094 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 6.875 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BOLT HOLE QUANTITY: 8
•
BODY OUTSIDE DIAMETER: 6.435 INCHES NOMINAL IN
•
COUNTERBORE DIAMETER: 0.438 INCHES NOMINAL IN
•
COUNTERBORE DEPTH: 0.281 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
UNTHREADED MOUNTING HOLE DIAMETER0.094 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER6.875 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
BOLT HOLE QUANTITY8
BODY OUTSIDE DIAMETER6.435 INCHES NOMINAL IN
COUNTERBORE DIAMETER0.438 INCHES NOMINAL IN
COUNTERBORE DEPTH0.281 INCHES NOMINAL IN
BODY INSIDE DIAMETER5.875 INCHES NOMINAL IN
LEFT SIDE FLANGE THICKNESS0.437 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
33736Interchangeable
interchangeable cross-reference
interchangeable
50596Interchangeable
interchangeable cross-reference
interchangeable
120X 9/16 (12 IN. LG)Interchangeable
interchangeable cross-reference
interchangeable
7702848Interchangeable
interchangeable cross-reference
interchangeable
150951Interchangeable
interchangeable cross-reference
interchangeable
R20401Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 302657?
302657 is a RETAINER,SPEED BRAKE.
What parts can replace 302657?
There are 22 known substitutes for 302657: 33736, 50596, 120X 9/16 (12 IN. LG) and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 302657?
302657 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-00-398-8178. 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