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6531-21-218-8102 — CLIP,SPRING TENSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6531-21-218-8102: CLIP,SPRING TENSION.

The CLIP,SPRING TENSION is a the manufacturer industrial component. Key specifications include width: 0.600 INCHES NOMINAL IN, length: 1.540 INCHES NOMINAL IN, material: STEEL COMP 321 OVERALL, loop_radius: 0.450 INCHES NOMINAL IN, hole_diameter: 0.200 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-170-3866, 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
6531-21-218-8102
NSN: 5340-01-170-3866
FSC: 5340 — Hardware, Commercial
CAGE: 54878 — ROTAIR AEROSPACE CORP (USA)
SPECIFICATIONS
width0.600 INCHES NOMINAL IN
length1.540 INCHES NOMINAL IN
materialSTEEL COMP 321 OVERALL
loop_radius0.450 INCHES NOMINAL IN
hole_diameter0.200 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
material_thickness0.050 INCHES NOMINAL IN
second_hole_diameter0.098 INCHES NOMINAL IN
loop/holding_dimension0.120 INCHES NOMINAL IN
material_document_and_classificationMIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
center_to_center_distance_between_loops1.200 INCHES NOMINAL IN
NSN5340-01-170-3866
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6531-21-218-8102 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: 1.540 INCHES NOMINAL IN
•
MOUNTING METHOD: UNTHREADED HOLE(S)
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
LOOP RADIUS: 0.450 INCHES NOMINAL IN
•
SECOND HOLE DIAMETER: 0.098 INCHES NOMINAL IN
•
LOOP/HOLDING DIMENSION: 0.120 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.050 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN LOOPS: 1.200 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH1.540 INCHES NOMINAL IN
MOUNTING METHODUNTHREADED HOLE(S)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
LOOP RADIUS0.450 INCHES NOMINAL IN
SECOND HOLE DIAMETER0.098 INCHES NOMINAL IN
LOOP/HOLDING DIMENSION0.120 INCHES NOMINAL IN
MATERIAL THICKNESS0.050 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOPS1.200 INCHES NOMINAL IN
WIDTH0.600 INCHES NOMINAL IN
MATERIALSTEEL COMP 321 OVERALL
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6531-21-218-8102?
6531-21-218-8102 is a CLIP,SPRING TENSION.
What is the NSN for 6531-21-218-8102?
6531-21-218-8102 is cataloged in the U.S. Government catalog under NSN 5340-01-170-3866. 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.