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610664 — INSERT,FLEXIBLE COUPLING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

610664: INSERT,FLEXIBLE COUPLING.

The INSERT,FLEXIBLE COUPLING is a the manufacturer industrial component. Key specifications include material: STEEL, special_features: LAMINATED CONSTRUCTION FEATURE-INCL.;BORE DIA 3.340 IN. IN, style_designator: MULTIPLE HOLES, ROUND BORE, overall_thickness: 0.156 INCHES NOMINAL IN, bolt_hole_diameter: 0.328 INCHES NOMINAL IN, bolt_circle_diameter: 4.188 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5330-00-291-9639, 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
610664
NSN: 5330-00-291-9639
NIINs: 002919639, 009597709
FSC: 5330 — Packing and Gasket Materials
CAGE: 12793 — AQUA-CHEM INC CLEAVER-BROOKS DIV (USA)
SPECIFICATIONS
materialSTEEL
special_featuresLAMINATED CONSTRUCTION FEATURE-INCL.;BORE DIA 3.340 IN. IN
style_designatorMULTIPLE HOLES, ROUND BORE
overall_thickness0.156 INCHES NOMINAL IN
bolt_hole_diameter0.328 INCHES NOMINAL IN
bolt_hole_quantity6
bolt_circle_diameter4.188 INCHES NOMINAL IN
overall_outside_diameter5.040 INCHES NOMINAL IN
NSN5330-00-291-9639
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 610664 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
•
SEAL WIDTH: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 2.000 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 1.500 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER2.000 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER1.500 INCHES NOMINAL IN
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 7
837549-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
125-26Reference document
Same NSN cross-reference
Reference document — Secondary reference
55-22034Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
55-22034 PART 28Reference document
Same NSN cross-reference
Reference document — Secondary reference
00044Reference document
Same NSN cross-reference
Reference document — Secondary reference
240319Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 610664?
610664 is a INSERT,FLEXIBLE COUPLING.
What parts can replace 610664?
There are 7 known substitutes for 610664: 837549-00, 125-26, 55-22034 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 610664?
610664 is cataloged in the U.S. Government catalog under NSN 5330-00-291-9639. 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.