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1128LM40405-11 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1128LM40405-11: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL, surface_treatment: CADMIUM AND CHROMATE, fsc_application_data: SPRING ASSEMBLY,NOSE GEAR LAUNCH,AIRCRAFT, casehardening_indicator: NOT CASEHARDENED, material_hardness_rating: 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM, surface_treatment_document_and_classification: QQ-P-416, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-182-5168, 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
1128LM40405-11
NSN: 5340-00-182-5168
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL
surface_treatmentCADMIUM AND CHROMATE
fsc_application_dataSPRING ASSEMBLY,NOSE GEAR LAUNCH,AIRCRAFT
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
surface_treatment_document_and_classificationQQ-P-416, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE
NSN5340-00-182-5168
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1128LM40405-11 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
•
FSC APPLICATION DATA: SPRING ASSEMBLY,NOSE GEAR LAUNCH,AIRCRAFT
•
MATERIAL HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SURFACE TREATMENT: CADMIUM AND CHROMATE
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATASPRING ASSEMBLY,NOSE GEAR LAUNCH,AIRCRAFT
MATERIAL HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIALSTEEL
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
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FREQUENTLY ASKED QUESTIONS
What is 1128LM40405-11?
1128LM40405-11 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for 1128LM40405-11?
1128LM40405-11 is cataloged in the U.S. Government catalog under NSN 5340-00-182-5168. This indicates validated use in U.S. government and defense supply chains.
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