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ST3M543N9D — CHANNEL,GANG

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ST3M543N9D: CHANNEL,GANG.

The CHANNEL,GANG is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_width: 0.452 INCHES NOMINAL IN, overall_height: 0.250 INCHES NOMINAL IN, overall_length: 72.000 INCHES NOMINAL IN, special_features: NUT SPACING IS 1.125 IN NOM/INSIDE WIDTH OF CHANNEL IS .345/MATERIAL IS ALUMINUM PER QQ-A-250/13 IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-497-2944, 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
ST3M543N9D
NSN: 5340-01-497-2944
FSC: 5340 — Hardware, Commercial
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_width0.452 INCHES NOMINAL IN
overall_height0.250 INCHES NOMINAL IN
overall_length72.000 INCHES NOMINAL IN
special_featuresNUT SPACING IS 1.125 IN NOM/INSIDE WIDTH OF CHANNEL IS .345/MATERIAL IS ALUMINUM PER QQ-A-250/13 IN
NSN5340-01-497-2944
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST3M543N9D 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
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.250 INCHES NOMINAL IN
OVERALL LENGTH72.000 INCHES NOMINAL IN
OVERALL WIDTH0.452 INCHES NOMINAL IN
SPECIAL FEATURESNUT SPACING IS 1.125 IN NOM/INSIDE WIDTH OF CHANNEL IS .345/MATERIAL IS ALUMINUM PER QQ-A-250/13 IN
MATERIALALUMINUM ALLOY
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

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 ST3M543N9D?
ST3M543N9D is a CHANNEL,GANG.
What is the NSN for ST3M543N9D?
ST3M543N9D is cataloged in the U.S. Government catalog under NSN 5340-01-497-2944. 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.