PartsTable
Technical Data Sheet
Download PDF

D53387 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

D53387: CUP,TAPERED ROLLER BEARING.

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL CORROSION RESISTING STEM, valve_size: 0.750 INCHES IN, bonnet_type: OUTSIDE SCREW-YOKE, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, connection_style: SOCKET ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-237-8558, 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
D53387
NSN: 4730-01-237-8558
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING STEM
valve_size0.750 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
connection_styleSOCKET ALL ENDS
special_featuresMODIFIED BY NON ASBESTOS PACKING
style_designatorANGLE FLANGED ENDS
mounting_positionVERTICAL
nominal_thickness0.812 INCHES ALL ENDS IN
bolt_hole_quantity4 ALL ENDS
flange_face_designRAISED STRAIGHT ALL ENDS
NSN4730-01-237-8558
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: D53387 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
SUBSTITUTES & CROSS-REFERENCES 1
53387Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy D53387?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is D53387?
D53387 is a CUP,TAPERED ROLLER BEARING.
What parts can replace D53387?
There is 1 known substitute for D53387: 53387. Substitute compatibility should be verified for your specific system.
What is the NSN for D53387?
D53387 is cataloged in the U.S. Government catalog under NSN 4730-01-237-8558. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — D53387

✓ 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.