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TFD91 — CLAMP,LOOP

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

TFD91: CLAMP,LOOP.

The CLAMP,LOOP is a the manufacturer industrial component. Key specifications include diameter: 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN, material: STEEL CUSHION, overall_width: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN, style_designator: SINGLE LOOP, tongue_hole_type: ROUND, UNTHREADED, material_thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-515-1375, 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
TFD91
NSN: 5340-00-515-1375
FSC: 5340 — Hardware, Commercial
CAGE: 78570 — SMITHS TUBULAR SYSTEMS-LACONIA, INC. (USA)
SPECIFICATIONS
diameter0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
materialSTEEL CUSHION
overall_width0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
style_designatorSINGLE LOOP
tongue_hole_typeROUND, UNTHREADED
material_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
loop_inside_diameter0.250 INCHES NOMINAL IN
material_document_and_classificationAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE BAND
distance_from_loop_center_to_tongue_end0.732 INCHES MINIMUM AND 0.762 INCHES MAXIMUM IN
center_to_center_distance_between_loop_and_mounting_hole0.519 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
NSN5340-00-515-1375
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: TFD91 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: SINGLE LOOP
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE BAND
•
DIAMETER: 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
DISTANCE FROM LOOP CENTER TO TONGUE END: 0.732 INCHES MINIMUM AND 0.762 INCHES MAXIMUM IN
•
TONGUE HOLE TYPE: ROUND, UNTHREADED
•
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 0.519 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSINGLE LOOP
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE BAND
DIAMETER0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN
OVERALL WIDTH0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
MATERIAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
DISTANCE FROM LOOP CENTER TO TONGUE END0.732 INCHES MINIMUM AND 0.762 INCHES MAXIMUM IN
TONGUE HOLE TYPEROUND, UNTHREADED
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.519 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
MATERIALSTEEL COMP 321 BAND
MATERIALSTEEL CUSHION
SUBSTITUTES & CROSS-REFERENCES 8
SAE-AS1553Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
535D6Reference document
Same NSN cross-reference
Reference document — Secondary reference
389-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
115C6011P2Reference document
Same NSN cross-reference
Reference document — Secondary reference
277398Reference document
Same NSN cross-reference
Reference document — Secondary reference
5340PL0733939Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TFD91?
TFD91 is a CLAMP,LOOP.
What parts can replace TFD91?
There are 8 known substitutes for TFD91: SAE-AS1553, 535D6, 389-4 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TFD91?
TFD91 is cataloged in the U.S. Government catalog under NSN 5340-00-515-1375. This indicates validated use in U.S. government and defense supply chains.
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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.