PartsTable
Technical Data Sheet
Download PDF

U537457 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

U537457: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL CORROSION RESISTING, lip_thickness: 0.020 INCHES NOMINAL IN, overall_height: 0.260 INCHES NOMINAL IN, end_hole_diameter: 5.090 INCHES NOMINAL IN, surface_treatment: PASSIVATE, body_inside_diameter: 5.510 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-040-5984, 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
U537457
NSN: 5340-01-040-5984
FSC: 5340 — Hardware, Commercial
CAGE: 78943 — TRIUMPH THERMAL SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
lip_thickness0.020 INCHES NOMINAL IN
overall_height0.260 INCHES NOMINAL IN
end_hole_diameter5.090 INCHES NOMINAL IN
surface_treatmentPASSIVATE
body_inside_diameter5.510 INCHES NOMINAL IN
body_outside_diameter5.530 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
NSN5340-01-040-5984
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: U537457 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
•
BODY OUTSIDE DIAMETER: 5.530 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 5.510 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
LIP THICKNESS: 0.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL CORROSION RESISTING
•
END HOLE DIAMETER: 5.090 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.260 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER5.530 INCHES NOMINAL IN
BODY INSIDE DIAMETER5.510 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
LIP THICKNESS0.020 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL CORROSION RESISTING
END HOLE DIAMETER5.090 INCHES NOMINAL IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy U537457?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is U537457?
U537457 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for U537457?
U537457 is cataloged in the U.S. Government catalog under NSN 5340-01-040-5984. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — U537457

✓ 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.