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Technical Data Sheet
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504657 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: NOT INCLUDED, material: STEEL LOCATION NOT OTHERWISE SPECIFIED, mounting_pad: NOT INCLUDED, overall_width: 0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN, overall_length: 2.625 INCHES MINIMUM AND 3.312 INCHES MAXIMUM IN, style_designator: CURVED ARCH. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-282-7794, 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
504657
NSN: 5340-00-282-7794
FSC: 5340
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
cushionNOT INCLUDED
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
mounting_padNOT INCLUDED
overall_width0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
overall_length2.625 INCHES MINIMUM AND 3.312 INCHES MAXIMUM IN
style_designatorCURVED ARCH
surface_treatmentCADMIUM OR ZINC AND CHROMATE
material_thickness0.203 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
mounting_hole_size0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
inside_diameter/arch_length1.315 INCHES NOMINAL IN
center_to_center_distance_between_arch_and_mounting_hole1.250 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN
NSN5340-00-282-7794
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 504657 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
•
MOUNTING HOLE SIZE: 0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN ARCH AND MOUNTING HOLE: 1.250 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN
•
INSIDE DIAMETER/ARCH LENGTH: 1.315 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR ZINC AND CHROMATE
•
MATERIAL: STEEL LOCATION NOT OTHERWISE SPECIFIED
•
STYLE DESIGNATOR: CURVED ARCH
•
MATERIAL THICKNESS: 0.203 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
•
CUSHION: NOT INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING HOLE SIZE0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN ARCH AND MOUNTING HOLE1.250 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN
INSIDE DIAMETER/ARCH LENGTH1.315 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC AND CHROMATE
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATORCURVED ARCH
MATERIAL THICKNESS0.203 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
CUSHIONNOT INCLUDED
OVERALL WIDTH0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
MOUNTING PADNOT INCLUDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
FF-S-760Upgraded Successor
successor cross-reference
successor
167A33Upgraded Successor
successor cross-reference
successor
NASM760-TYP1, STYB, 5/16Upgraded Successor
successor cross-reference
successor
PTMC75Upgraded Successor
successor cross-reference
successor
NASM760Upgraded Successor
successor cross-reference
successor
MS35140-16Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 504657?
504657 is a STRAP,RETAINING.
What parts can replace 504657?
There are 22 known substitutes for 504657: FF-S-760, 167A33, NASM760-TYP1, STYB, 5/16 and 19 more. Substitute compatibility should be verified for your specific system.
Is 504657 still available?
504657 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026