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1128HM40081 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1128HM40081: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: ALUMINUM ALLOY, overall_height: 3.672 INCHES MINIMUM AND 3.702 INCHES MAXIMUM IN, flange_diameter: 2.682 INCHES MINIMUM AND 2.692 INCHES MAXIMUM IN, style_designator: PARALLEL, body_outside_diameter: 2.057 INCHES MINIMUM AND 2.067 INCHES MAXIMUM IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-421-4532, 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
1128HM40081
NSN: 5340-00-421-4532
FSC: 5340 — Hardware, Commercial
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_height3.672 INCHES MINIMUM AND 3.702 INCHES MAXIMUM IN
flange_diameter2.682 INCHES MINIMUM AND 2.692 INCHES MAXIMUM IN
style_designatorPARALLEL
body_outside_diameter2.057 INCHES MINIMUM AND 2.067 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
NSN5340-00-421-4532
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1128HM40081 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
•
FLANGE DIAMETER: 2.682 INCHES MINIMUM AND 2.692 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 2.057 INCHES MINIMUM AND 2.067 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PARALLEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER2.682 INCHES MINIMUM AND 2.692 INCHES MAXIMUM IN
OVERALL HEIGHT3.672 INCHES MINIMUM AND 3.702 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER2.057 INCHES MINIMUM AND 2.067 INCHES MAXIMUM IN
STYLE DESIGNATORPARALLEL
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALALUMINUM ALLOY
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 1
1128HM40081-13Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 1128HM40081?
1128HM40081 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 1128HM40081?
There is 1 known substitute for 1128HM40081: 1128HM40081-13. Substitute compatibility should be verified for your specific system.
What is the NSN for 1128HM40081?
1128HM40081 is cataloged in the U.S. Government catalog under NSN 5340-00-421-4532. This indicates validated use in U.S. government and defense supply chains.
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