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685720-1 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

685720-1: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, construction: SOLID, style_designator: CIRCULAR, aperture_diameter: 34.800 INCHES NOMINAL IN, attachment_method: ROUND HOLE, fabrication_method: SOLID. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-175-1435, 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
685720-1
NSN: 5340-00-175-1435
NIINs: 001751435, 002690834
FSC: 5340 — Hardware, Commercial
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
constructionSOLID
style_designatorCIRCULAR
aperture_diameter34.800 INCHES NOMINAL IN
attachment_methodROUND HOLE
fabrication_methodSOLID
attachment_hole_diameter0.250 INCHES NOMINAL IN
attachment_feature_quantity40
NSN5340-00-175-1435
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 685720-1 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
PART NAME ASSIGNED BY CONTROLLING AGENCYPOST,ELECTRICAL-MECHANICAL EQUIPMENT
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
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FREQUENTLY ASKED QUESTIONS
What is 685720-1?
685720-1 is a STANDOFF,THREADED,SPACING.
What is the NSN for 685720-1?
685720-1 is cataloged in the U.S. Government catalog under NSN 5340-00-175-1435. 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.