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ACD3264 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ACD3264: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include special_features: CAPS ARE KNURLED FOR EASE OF APPLICATION;ITAR ITEM, end_item_identification: 1240-01-578-0211, SIGHT UNIT, part_name_assigned_by_controlling_agency: EXTERNAL ADJUSTER CAP (BLACK). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-584-1793, 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
ACD3264
NSN: 5340-01-584-1793
FSC: 5340 — Hardware, Commercial
CAGE: 0FL29 — TRIJICON, INC. DBA TRIJICON INC (USA)
SPECIFICATIONS
special_featuresCAPS ARE KNURLED FOR EASE OF APPLICATION;ITAR ITEM
end_item_identification1240-01-578-0211, SIGHT UNIT
part_name_assigned_by_controlling_agencyEXTERNAL ADJUSTER CAP (BLACK)
NSN5340-01-584-1793
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ACD3264 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESCAPS ARE KNURLED FOR EASE OF APPLICATION;ITAR ITEM
PART NAME ASSIGNED BY CONTROLLING AGENCYEXTERNAL ADJUSTER CAP (BLACK)
END ITEM IDENTIFICATION1240-01-578-0211, SIGHT UNIT
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ACD3264?
ACD3264 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What is the NSN for ACD3264?
ACD3264 is cataloged in the U.S. Government catalog under NSN 5340-01-584-1793. 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.