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2493758 — LINER,RELIEF VALVE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2493758: LINER,RELIEF VALVE.

The LINER,RELIEF VALVE is a the manufacturer industrial component. Key specifications include fsc_application_data: POWER UNIT ASSEMBLY, end_item_identification: AIRCRAFT MODEL A-18,F-18, general_characteristics_item_description: STEEL BAR AMS 5639,1.065 IN. MIN1.075 IN.MAX O/A LG; PASSIVATE PER ASTM A380-57 IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-00-082-1589, 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
2493758
NSN: 5305-00-082-1589
NIINs: 000821589, 011437325
FSC: 5305 — Screws
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
fsc_application_dataPOWER UNIT ASSEMBLY
end_item_identificationAIRCRAFT MODEL A-18,F-18
general_characteristics_item_descriptionSTEEL BAR AMS 5639,1.065 IN. MIN1.075 IN.MAX O/A LG; PASSIVATE PER ASTM A380-57 IN
NSN5305-00-082-1589
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2493758 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.051 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
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SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7720,COND A MIL SPEC SINGLE MATERIAL RESPONSE
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THREAD LENGTH: 0.067 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.099 INCHES IN
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HEAD STYLE: PAN NO. 2
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.051 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720,COND A MIL SPEC SINGLE MATERIAL RESPONSE
THREAD LENGTH0.067 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.099 INCHES IN
HEAD STYLEPAN NO. 2
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 302
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2493758?
2493758 is a LINER,RELIEF VALVE.
What is the NSN for 2493758?
2493758 is cataloged in the U.S. Government catalog under NSN 5305-00-082-1589. 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.