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Technical Data Sheet
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477/3 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The 477/3 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-685-1202, 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
477/3
NSN: 5340-00-685-1202
FSC: 5340
CAGE: 1DV78 — PROGRESSIVE HARDWARE CO., INC. DBA PROGRESSIVE HARDWARE CO INC (USA)
SPECIFICATIONS
Part Number477/3
NSN5340-00-685-1202
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 477/3 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
•
KNOB QUANTITY: 1
•
FACE SHAPE: FLAT
•
THICKNESS: 1.375 INCHES NOMINAL OVERALL IN
•
BOLT TYPE: REGULAR BEVEL OR UNIVERSAL
•
SHAPE: RECTANGULAR CASE
•
LOCKING MECHANISM TYPE: PIN TUMBLER
•
MATERIAL: COPPER ALLOY KNOB
•
BACKSET DEPTH: 2.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
KNOB QUANTITY1
FACE SHAPEFLAT
THICKNESS1.375 INCHES NOMINAL OVERALL IN
BOLT TYPEREGULAR BEVEL OR UNIVERSAL
SHAPERECTANGULAR CASE
LOCKING MECHANISM TYPEPIN TUMBLER
MATERIALCOPPER ALLOY KNOB
BACKSET DEPTH2.750 INCHES NOMINAL IN
MATERIALCOPPER ALLOY CASE
LENGTH2.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
FFH106-160E-4Upgraded Successor
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successor
FF-H-106Upgraded Successor
successor cross-reference
successor
A55PDPLY28Upgraded Successor
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successor
B260PUpgraded Successor
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successor
BR260Upgraded Successor
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successor
4773Upgraded Successor
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successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 477/3?
477/3 is a 477/3.
What parts can replace 477/3?
There are 22 known substitutes for 477/3: FFH106-160E-4, FF-H-106, A55PDPLY28 and 19 more. Substitute compatibility should be verified for your specific system.
Is 477/3 still available?
477/3 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026