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K11821 — CLIP,SPRING TENSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

K11821: CLIP,SPRING TENSION.

The CLIP,SPRING TENSION is a the manufacturer industrial component. Key specifications include width: 0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, length: 1.901 INCHES MINIMUM AND 1.952 INCHES MAXIMUM IN, material: STEEL COMP 1095 OVERALL, hole_diameter: 0.280 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, surface_treatment: PAINT OVERALL, loop_opening_width: 0.853 INCHES MINIMUM AND 0.863 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-780-6922, 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
K11821
NSN: 5340-00-780-6922
FSC: 5340 — Hardware, Commercial
CAGE: K0680 — ROLLS-ROYCE AIRLINES (GBR)
SPECIFICATIONS
width0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
length1.901 INCHES MINIMUM AND 1.952 INCHES MAXIMUM IN
materialSTEEL COMP 1095 OVERALL
hole_diameter0.280 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
surface_treatmentPAINT OVERALL
loop_opening_width0.853 INCHES MINIMUM AND 0.863 INCHES MAXIMUM IN
material_thickness0.330 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
loop/holding_dimension0.940 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
material_document_and_classificationAMS 5121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5340-00-780-6922
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: K11821 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: 1.901 INCHES MINIMUM AND 1.952 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
LOOP/HOLDING DIMENSION: 0.940 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.330 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
LOOP OPENING WIDTH: 0.853 INCHES MINIMUM AND 0.863 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PAINT OVERALL
•
WIDTH: 0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1095 OVERALL
TECHNICAL CHARACTERISTICS
LENGTH1.901 INCHES MINIMUM AND 1.952 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5121 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
LOOP/HOLDING DIMENSION0.940 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
MATERIAL THICKNESS0.330 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
LOOP OPENING WIDTH0.853 INCHES MINIMUM AND 0.863 INCHES MAXIMUM IN
SURFACE TREATMENTPAINT OVERALL
WIDTH0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1095 OVERALL
HOLE DIAMETER0.280 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
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 1
6864045-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 K11821?
K11821 is a CLIP,SPRING TENSION.
What parts can replace K11821?
There is 1 known substitute for K11821: 6864045-21. Substitute compatibility should be verified for your specific system.
What is the NSN for K11821?
K11821 is cataloged in the U.S. Government catalog under NSN 5340-00-780-6922. 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.