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753661-1 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

753661-1: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL COMP 347, overall_height: 0.100 INCHES NOMINAL IN, style_designator: IRREGULAR, body_inside_diameter: 0.815 INCHES NOMINAL IN, body_outside_diameter: 1.356 INCHES MINIMUM AND 1.372 INCHES MAXIMUM IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-330-5599, 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
753661-1
NSN: 5340-01-330-5599
FSC: 5340 — Hardware, Commercial
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 347
overall_height0.100 INCHES NOMINAL IN
style_designatorIRREGULAR
body_inside_diameter0.815 INCHES NOMINAL IN
body_outside_diameter1.356 INCHES MINIMUM AND 1.372 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating75.5 ROCKWELL 15N MINIMUM
material_document_and_classificationAMS 5512 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-330-5599
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 753661-1 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
•
MATERIAL HARDNESS RATING: 75.5 ROCKWELL 15N MINIMUM
•
BODY OUTSIDE DIAMETER: 1.356 INCHES MINIMUM AND 1.372 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: IRREGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5512 ASSN STD SINGLE MATERIAL RESPONSE
•
BODY INSIDE DIAMETER: 0.815 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: STEEL COMP 347
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.100 INCHES NOMINAL IN
MATERIAL HARDNESS RATING75.5 ROCKWELL 15N MINIMUM
BODY OUTSIDE DIAMETER1.356 INCHES MINIMUM AND 1.372 INCHES MAXIMUM IN
STYLE DESIGNATORIRREGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5512 ASSN STD SINGLE MATERIAL RESPONSE
BODY INSIDE DIAMETER0.815 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALSTEEL COMP 347
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 753661-1?
753661-1 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for 753661-1?
753661-1 is cataloged in the U.S. Government catalog under NSN 5340-01-330-5599. 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.