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2531771 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2531771: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 1020, design_type: SOLID, end_diameter: 0.5210 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN, bore_diameter: 0.2790 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN, style_designator: SEAT, first_step_length: 0.1150 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-483-7114, 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
2531771
NSN: 5340-01-483-7114
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 1020
design_typeSOLID
end_diameter0.5210 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN
bore_diameter0.2790 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN
style_designatorSEAT
first_step_length0.1150 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN
distance_from_end_to_first_step0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN
material_document_and_classificationASTM A108, GRADE 1020 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencySEAT,SPRING
NSN5340-01-483-7114
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2531771 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
•
END DIAMETER: 0.5210 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108, GRADE 1020 ASSN STD SINGLE MATERIAL RESPONSE
•
FIRST STEP LENGTH: 0.1150 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN
•
BORE DIAMETER: 0.2790 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
END DIAMETER0.5210 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108, GRADE 1020 ASSN STD SINGLE MATERIAL RESPONSE
FIRST STEP LENGTH0.1150 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAT,SPRING
BORE DIAMETER0.2790 INCHES MINIMUM AND 0.5410 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1020
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 2531771?
2531771 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 2531771?
2531771 is cataloged in the U.S. Government catalog under NSN 5340-01-483-7114. 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.