PartsTable
Technical Data Sheet
MS51956-6 ✓ 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: 1.500 INCHES NOMINAL IN, overall_length: 4.125 INCHES NOMINAL IN, style_designator: CURVED ARCH. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-925-2279, 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
MS51956-6
NSN: 5340-00-925-2279
FSC: 5340
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
cushionNOT INCLUDED
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
mounting_padNOT INCLUDED
overall_width1.500 INCHES NOMINAL IN
overall_length4.125 INCHES NOMINAL IN
style_designatorCURVED ARCH
surface_treatmentZINC AND CHROMATE
material_thickness0.125 INCHES NOMINAL IN
mounting_hole_size0.406 INCHES NOMINAL IN
inside_diameter/arch_length2.197 INCHES NOMINAL IN
material_document_and_classificationASTM-A568 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
surface_treatment_document_and_classificationASTM-B633 TYPE 2 ASSN STD ALL TREATMENT RESPONSES
NSN5340-00-925-2279
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS51956-6 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 PAD: NOT INCLUDED
INSIDE DIAMETER/ARCH LENGTH: 2.197 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN ARCH AND MOUNTING HOLE: 1.938 INCHES NOMINAL IN
MATERIAL: STEEL LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENT: ZINC AND CHROMATE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM-B633 TYPE 2 ASSN STD ALL TREATMENT RESPONSES
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-A568 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATOR: CURVED ARCH
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING PADNOT INCLUDED
INSIDE DIAMETER/ARCH LENGTH2.197 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN ARCH AND MOUNTING HOLE1.938 INCHES NOMINAL IN
MATERIALSTEEL LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENTZINC AND CHROMATE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM-B633 TYPE 2 ASSN STD ALL TREATMENT RESPONSES
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-A568 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATORCURVED ARCH
CUSHIONNOT INCLUDED
OVERALL LENGTH4.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
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 MS51956-6?
MS51956-6 is a STRAP,RETAINING.
What parts can replace MS51956-6?
There are 18 known substitutes for MS51956-6: FF-S-760, 167A33, NASM760-TYP1, STYB, 5/16 and 15 more. Substitute compatibility should be verified for your specific system.
Is MS51956-6 still available?
MS51956-6 is currently cancelled.
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