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1643674 — HARDWARE KIT,MECHANIC EQUIPMENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1643674: HARDWARE KIT,MECHANIC EQUIPMENT.

HARDWARE KIT,MECHANIC EQUIPMENT. Key specifications include special_features: ITEMS INCLUDED: O-RING (OR-222); LOCKING WASHER (HCLW-07); SOCKET HEAD CAP SCREW (SHCS0714/1.75), end_item_identification: 3990-01-443-8024 ENGINEERING MISSION MODULE USED ON THE PALLETIZED LOADING SYSTEM, part_name_assigned_by_controlling_agency: FLANGE KIT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-538-4333, 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
1643674
NSN: 5340-01-538-4333
FSC: 5340 — Hardware, Commercial
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
special_featuresITEMS INCLUDED: O-RING (OR-222); LOCKING WASHER (HCLW-07); SOCKET HEAD CAP SCREW (SHCS0714/1.75)
component_quantity3
end_item_identification3990-01-443-8024 ENGINEERING MISSION MODULE USED ON THE PALLETIZED LOADING SYSTEM
part_name_assigned_by_controlling_agencyFLANGE KIT
NSN5340-01-538-4333
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1643674 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
•
COMPONENT QUANTITY: 3
TECHNICAL CHARACTERISTICS
COMPONENT QUANTITY3
SPECIAL FEATURESITEMS INCLUDED: O-RING (OR-222); LOCKING WASHER (HCLW-07); SOCKET HEAD CAP SCREW (SHCS0714/1.75)
PART NAME ASSIGNED BY CONTROLLING AGENCYFLANGE KIT
END ITEM IDENTIFICATION3990-01-443-8024 ENGINEERING MISSION MODULE USED ON THE PALLETIZED LOADING SYSTEM
SUBSTITUTES & CROSS-REFERENCES 2
4HB821Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
403793Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 1643674?
1643674 is a HARDWARE KIT,MECHANIC EQUIPMENT.
What parts can replace 1643674?
There are 2 known substitutes for 1643674: 4HB821, 403793. Substitute compatibility should be verified for your specific system.
What is the NSN for 1643674?
1643674 is cataloged in the U.S. Government catalog under NSN 5340-01-538-4333. This indicates validated use in U.S. government and defense supply chains.
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