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42538A — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

42538A: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: ALUMINUM ALLOY, design_type: SOLID, overall_height: 0.1350 INCHES NOMINAL IN, surface_treatment: ANODIZE, first_step_diameter: 0.8090 INCHES NOMINAL IN, distance_from_end_to_first_step: 0.0700 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-059-8030, 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
42538A
NSN: 5340-01-059-8030
FSC: 5340 — Hardware, Commercial
CAGE: 73760 — ITT AEROSPACE CONTROLS LLC DBA ITT AEROSPACE CONTROLS UNIT S (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
design_typeSOLID
overall_height0.1350 INCHES NOMINAL IN
surface_treatmentANODIZE
first_step_diameter0.8090 INCHES NOMINAL IN
distance_from_end_to_first_step0.0700 INCHES NOMINAL IN
surface_treatment_document_and_classificationMIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-059-8030
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 42538A 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
•
FIRST STEP DIAMETER: 0.8090 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE
•
DISTANCE FROM END TO FIRST STEP: 0.0700 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
SURFACE TREATMENT: ANODIZE
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1350 INCHES NOMINAL IN
FIRST STEP DIAMETER0.8090 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE
DISTANCE FROM END TO FIRST STEP0.0700 INCHES NOMINAL IN
DESIGN TYPESOLID
SURFACE TREATMENTANODIZE
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

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 42538A?
42538A is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 42538A?
42538A is cataloged in the U.S. Government catalog under NSN 5340-01-059-8030. This indicates validated use in U.S. government and defense supply chains.
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