PartsTable
Technical Data Sheet
Download PDF

5596K921 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5596K921: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC POLYAMIDE NYLON, design_type: FRICTION, special_features: LOCKING LEVERS, end_item_identification: NSN: 5340-01-487-7760, part_name_assigned_by_controlling_agency: CAP X SOCKET WITH TYPE 304 STAINLESS STEEL LEVERS, tube_outside_diameter_for_which_designed: 1.437 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-534-4789, 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
5596K921
NSN: 5340-01-534-4789
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
design_typeFRICTION
special_featuresLOCKING LEVERS
end_item_identificationNSN: 5340-01-487-7760
part_name_assigned_by_controlling_agencyCAP X SOCKET WITH TYPE 304 STAINLESS STEEL LEVERS
tube_outside_diameter_for_which_designed1.437 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed1.000 INCHES NOMINAL IN
NSN5340-01-534-4789
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5596K921 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DESIGN TYPE: FRICTION
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.437 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 1.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.437 INCHES NOMINAL IN
OPENING INSIDE DIAMETER FOR WHICH DESIGNED1.000 INCHES NOMINAL IN
SPECIAL FEATURESLOCKING LEVERS
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP X SOCKET WITH TYPE 304 STAINLESS STEEL LEVERS
END ITEM IDENTIFICATIONNSN: 5340-01-487-7760
MATERIALPLASTIC POLYAMIDE NYLON
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 5596K921?
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 5596K921?
5596K921 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What is the NSN for 5596K921?
5596K921 is cataloged in the U.S. Government catalog under NSN 5340-01-534-4789. 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 — 5596K921

✓ 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.