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751-6402970-1 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

751-6402970-1: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: PLASTIC, overall_height: 0.560 INCHES NOMINAL IN, style_designator: FLAT TOP COUNTERBORED, end_item_identification: TORP,TUBE, outside/top_flange_diameter: 1.690 INCHES NOMINAL IN, largest_countersink_diameter: 0.220 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-501-0135, 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
751-6402970-1
NSN: 5340-01-501-0135
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC
overall_height0.560 INCHES NOMINAL IN
style_designatorFLAT TOP COUNTERBORED
end_item_identificationTORP,TUBE
outside/top_flange_diameter1.690 INCHES NOMINAL IN
largest_countersink_diameter0.220 INCHES NOMINAL IN
NSN5340-01-501-0135
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 751-6402970-1 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
KEY FEATURES
•
OUTSIDE/TOP FLANGE DIAMETER: 1.690 INCHES NOMINAL IN
•
LARGEST COUNTERSINK DIAMETER: 0.220 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.560 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER1.690 INCHES NOMINAL IN
LARGEST COUNTERSINK DIAMETER0.220 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
END ITEM IDENTIFICATIONTORP,TUBE
MATERIALPLASTIC
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 3
751-6402302-102Reference document
Same NSN cross-reference
Reference document — Secondary reference
751-6402301-102Reference document
Same NSN cross-reference
Reference document — Secondary reference
211073796Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 751-6402970-1?
751-6402970-1 is a BUMPER.
What parts can replace 751-6402970-1?
There are 3 known substitutes for 751-6402970-1: 751-6402302-102, 751-6402301-102, 211073796. Substitute compatibility should be verified for your specific system.
What is the NSN for 751-6402970-1?
751-6402970-1 is cataloged in the U.S. Government catalog under NSN 5340-01-501-0135. 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.