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203-4678531ITEM3 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

203-4678531ITEM3: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.000 INCHES NOMINAL IN, diameter: 0.4995 INCHES MINIMUM AND 0.5005 INCHES MAXIMUM IN, style_designator: LEFT INTERNAL THREAD, cross-sectional_shape: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-062-6697, 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
203-4678531ITEM3
NSN: 5340-01-062-6697
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
length1.000 INCHES NOMINAL IN
diameter0.4995 INCHES MINIMUM AND 0.5005 INCHES MAXIMUM IN
style_designatorLEFT INTERNAL THREAD
cross-sectional_shapeROUND
NSN5340-01-062-6697
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 203-4678531ITEM3 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
•
LENGTH: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL THREAD
•
DIAMETER: 0.4995 INCHES MINIMUM AND 0.5005 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE: ROUND
TECHNICAL CHARACTERISTICS
LENGTH1.000 INCHES NOMINAL IN
STYLE DESIGNATORLEFT INTERNAL THREAD
DIAMETER0.4995 INCHES MINIMUM AND 0.5005 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPEROUND
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 2
203-4678531 ITEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
87719-0302PC3Reference 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 203-4678531ITEM3?
203-4678531ITEM3 is a STANDOFF,THREADED,SPACING.
What parts can replace 203-4678531ITEM3?
There are 2 known substitutes for 203-4678531ITEM3: 203-4678531 ITE, 87719-0302PC3. Substitute compatibility should be verified for your specific system.
What is the NSN for 203-4678531ITEM3?
203-4678531ITEM3 is cataloged in the U.S. Government catalog under NSN 5340-01-062-6697. 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.