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301-SJ-640 — DIAPHRAGM,CHAMBER,BRAKE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

301-SJ-640: DIAPHRAGM,CHAMBER,BRAKE.

The DIAPHRAGM,CHAMBER,BRAKE is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, construction: FABRIC INSERT, diaphragm_type: BEADED TAPERED SLEEVE, overall_height: 2.915 INCHES NOMINAL IN, mounting_method: BEAD, material_thickness: 0.080 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2530-00-853-7159, 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
301-SJ-640
NSN: 2530-00-853-7159
FSC: 2530 — Vehicular Brake, Steering, Axle, Wheel, and Track Components
CAGE: 77237 — DANA OFF HIGHWAY PRODUCTS, LLC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
constructionFABRIC INSERT
diaphragm_typeBEADED TAPERED SLEEVE
overall_height2.915 INCHES NOMINAL IN
mounting_methodBEAD
material_thickness0.080 INCHES NOMINAL IN
overall_outside_diameter5.250 INCHES NOMINAL IN
sleeve_smallest_outside_diameter3.750 INCHES NOMINAL IN
NSN2530-00-853-7159
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DIAPHRAGM,CHAMBER,BRAKE TITLE COMPONENT PN 301-SJ-640 MFR DIAPHRAGM,CHAMBER,BRAK
KEY FEATURES
•
DIAPHRAGM TYPE: BEADED TAPERED SLEEVE
•
SLEEVE SMALLEST OUTSIDE DIAMETER: 3.750 INCHES NOMINAL IN
•
MOUNTING METHOD: BEAD
•
OVERALL OUTSIDE DIAMETER: 5.250 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.080 INCHES NOMINAL IN
•
CONSTRUCTION: FABRIC INSERT
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.915 INCHES NOMINAL IN
DIAPHRAGM TYPEBEADED TAPERED SLEEVE
SLEEVE SMALLEST OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
MOUNTING METHODBEAD
OVERALL OUTSIDE DIAMETER5.250 INCHES NOMINAL IN
MATERIAL THICKNESS0.080 INCHES NOMINAL IN
CONSTRUCTIONFABRIC INSERT
MATERIALRUBBER CHLOROPRENE CLASS CR
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 301-SJ-640?
301-SJ-640 is a DIAPHRAGM,CHAMBER,BRAKE.
What is the NSN for 301-SJ-640?
301-SJ-640 is cataloged in the U.S. Government catalog under NSN 2530-00-853-7159. 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.