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1663A21 — LATCH SET,RIM

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1663A21: LATCH SET,RIM.

The LATCH SET,RIM is a the manufacturer industrial component. Key specifications include action_type: GRAVITY. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-249-4430, 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
1663A21
NSN: 5340-01-249-4430
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
action_typeGRAVITY
special_featuresCASE MATL-STEEL;CASE SHAPE-RECTANGULAR;KNOB QTY 1;KNOB MATL-STEEL;KNOB SHAPE-ELLIPTICAL;KNOB DESIGN-PLAIN;ACTIVE CASE HGT 2.125 IN.;ACTIVE CASE WDTH 1.500 IN.;ESCUTCHEON,FURNISHED IN
NSN5340-01-249-4430
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1663A21 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
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ACTION TYPE: GRAVITY
TECHNICAL CHARACTERISTICS
ACTION TYPEGRAVITY
SPECIAL FEATURESCASE MATL-STEEL;CASE SHAPE-RECTANGULAR;KNOB QTY 1;KNOB MATL-STEEL;KNOB SHAPE-ELLIPTICAL;KNOB DESIGN-PLAIN;ACTIVE CASE HGT 2.125 IN.;ACTIVE CASE WDTH 1.500 IN.;ESCUTCHEON,FURNISHED IN
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 1
1663A1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1663A21?
1663A21 is a LATCH SET,RIM.
What parts can replace 1663A21?
There is 1 known substitute for 1663A21: 1663A1. Substitute compatibility should be verified for your specific system.
What is the NSN for 1663A21?
1663A21 is cataloged in the U.S. Government catalog under NSN 5340-01-249-4430. This indicates validated use in U.S. government and defense supply chains.
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