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255023-A — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

255023-A: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.6250 INCHES NOMINAL IN, bore_diameter: 0.5000 INCHES NOMINAL IN, overall_height: 0.3437 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-972-7178, 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
255023-A
NSN: 5340-00-972-7178
FSC: 5340 — Hardware, Commercial
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter0.6250 INCHES NOMINAL IN
bore_diameter0.5000 INCHES NOMINAL IN
overall_height0.3437 INCHES NOMINAL IN
style_designatorSEAT
bore_taper_in_deg10.0
features_providedCASEHARDENED
first_step_length0.0937 INCHES NOMINAL IN
seat_angle_in_deg37.0
counterbore_length0.0156 INCHES NOMINAL IN
first_step_diameter0.9062 INCHES NOMINAL IN
NSN5340-00-972-7178
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 255023-A 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
•
COUNTERSINK ANGLE IN DEG: 45.0
•
FIRST STEP DIAMETER: 0.9062 INCHES NOMINAL IN
•
END DIAMETER: 0.6250 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 37.0
•
COUNTERSINK DIAMETER: 0.5312 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.8437 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.0468 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.3437 INCHES NOMINAL IN
COUNTERSINK ANGLE IN DEG45.0
FIRST STEP DIAMETER0.9062 INCHES NOMINAL IN
END DIAMETER0.6250 INCHES NOMINAL IN
SEAT ANGLE IN DEG37.0
COUNTERSINK DIAMETER0.5312 INCHES NOMINAL IN
SECOND END DIAMETER0.8437 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.0468 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
SUBSTITUTES & CROSS-REFERENCES 1
P1166Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 255023-A?
255023-A is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 255023-A?
There is 1 known substitute for 255023-A: P1166. Substitute compatibility should be verified for your specific system.
What is the NSN for 255023-A?
255023-A is cataloged in the U.S. Government catalog under NSN 5340-00-972-7178. 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.