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S280D4 — CLAMP,LOOP

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

S280D4: CLAMP,LOOP.

The CLAMP,LOOP is a the manufacturer industrial component. Key specifications include diameter: 0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN, material: ALUMINUM ALLOY 2024 BAND, overall_width: 0.375 INCHES NOMINAL IN, style_designator: OFFSET MOUNT, tongue_hole_type: ROUND, UNTHREADED, surface_treatment: ANODIZE BAND. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-837-4103, 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
S280D4
NSN: 5340-00-837-4103
FSC: 5340 — Hardware, Commercial
CAGE: 18076 — UMPCO, INC. DBA UMPCO INC (USA)
SPECIFICATIONS
diameter0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
materialALUMINUM ALLOY 2024 BAND
overall_width0.375 INCHES NOMINAL IN
style_designatorOFFSET MOUNT
tongue_hole_typeROUND, UNTHREADED
surface_treatmentANODIZE BAND
material_thickness0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
loop_inside_diameter0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND
distance_from_loop_center_to_tongue_end0.645 INCHES NOMINAL IN
center_to_center_distance_between_loop_and_mounting_hole0.457 INCHES NOMINAL IN
NSN5340-00-837-4103
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: S280D4 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
•
STYLE DESIGNATOR: OFFSET MOUNT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND
•
DIAMETER: 0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 0.645 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE BAND
•
TONGUE HOLE TYPE: ROUND, UNTHREADED
TECHNICAL CHARACTERISTICS
STYLE DESIGNATOROFFSET MOUNT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/5,T4 FED SPEC SINGLE MATERIAL RESPONSE BAND
DIAMETER0.201 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
OVERALL WIDTH0.375 INCHES NOMINAL IN
MATERIAL THICKNESS0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
DISTANCE FROM LOOP CENTER TO TONGUE END0.645 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE BAND
TONGUE HOLE TYPEROUND, UNTHREADED
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.457 INCHES NOMINAL IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE CUSHION
SUBSTITUTES & CROSS-REFERENCES 4
5340PL1683019Reference document
Same NSN cross-reference
Reference document — Informative reference only
5340PL1683032Reference document
Same NSN cross-reference
Reference document — Informative reference only
5340PL0765668Reference document
Same NSN cross-reference
Reference document — Informative reference only
C2874D4Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S280D4?
S280D4 is a CLAMP,LOOP.
What parts can replace S280D4?
There are 4 known substitutes for S280D4: 5340PL1683019, 5340PL1683032, 5340PL0765668 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S280D4?
S280D4 is cataloged in the U.S. Government catalog under NSN 5340-00-837-4103. 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.