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801-640878-19 — CLIP,SPRING TENSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

801-640878-19: CLIP,SPRING TENSION.

The CLIP,SPRING TENSION is a the manufacturer industrial component. Key specifications include width: 0.615 INCHES NOMINAL IN, length: 1.990 INCHES NOMINAL IN, material: STEEL COMP 301 OVERALL, loop_opening_width: 0.840 INCHES NOMINAL IN, material_thickness: 0.062 INCHES NOMINAL IN, material_document_and_classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-354-9896, 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
801-640878-19
NSN: 5340-01-354-9896
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
width0.615 INCHES NOMINAL IN
length1.990 INCHES NOMINAL IN
materialSTEEL COMP 301 OVERALL
loop_opening_width0.840 INCHES NOMINAL IN
material_thickness0.062 INCHES NOMINAL IN
material_document_and_classificationQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5340-01-354-9896
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 801-640878-19 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: 1.990 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.062 INCHES NOMINAL IN
•
LOOP OPENING WIDTH: 0.840 INCHES NOMINAL IN
•
WIDTH: 0.615 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 301 OVERALL
TECHNICAL CHARACTERISTICS
LENGTH1.990 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.062 INCHES NOMINAL IN
LOOP OPENING WIDTH0.840 INCHES NOMINAL IN
WIDTH0.615 INCHES NOMINAL IN
MATERIALSTEEL COMP 301 OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
DF330640 FN 19Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
211054773Reference 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 801-640878-19?
801-640878-19 is a CLIP,SPRING TENSION.
What parts can replace 801-640878-19?
There are 2 known substitutes for 801-640878-19: DF330640 FN 19, 211054773. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-640878-19?
801-640878-19 is cataloged in the U.S. Government catalog under NSN 5340-01-354-9896. 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.