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90-9088-5 — VALVE,LINEAR,DIRECTIONAL CONTROL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

90-9088-5: VALVE,LINEAR,DIRECTIONAL CONTROL.

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include special_features: 3.120 IN.LG,3.100 IN.W,UNIT SHALL OPERATE SATISFACTORLY WHEN MOUNTED IN ANY POSITION IN, end_item_identification: HAWK,IMPROVED,SURFACE TO AIR MISSLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-549-3369, 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
90-9088-5
NSN: 5340-00-549-3369
NIINs: 005493369, 007776719, 015977940
FSC: 5340 — Hardware, Commercial
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
special_features3.120 IN.LG,3.100 IN.W,UNIT SHALL OPERATE SATISFACTORLY WHEN MOUNTED IN ANY POSITION IN
end_item_identificationHAWK,IMPROVED,SURFACE TO AIR MISSLE
NSN5340-00-549-3369
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 90-9088-5 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: 1.1000 INCHES NOMINAL IN
•
END DIAMETER: 0.6950 INCHES NOMINAL IN
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DISTANCE FROM END TO FIRST STEP: 0.3050 INCHES NOMINAL IN
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STYLE DESIGNATOR: SEAT
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MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5659 ASSN STD 2ND MATERIAL RESPONSE
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BORE DIAMETER: 0.6300 INCHES MINIMUM AND 0.6350 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 630 OR STEEL COMP XM-12
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.3500 INCHES NOMINAL IN
FIRST STEP DIAMETER1.1000 INCHES NOMINAL IN
END DIAMETER0.6950 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.3050 INCHES NOMINAL IN
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5659 ASSN STD 2ND MATERIAL RESPONSE
BORE DIAMETER0.6300 INCHES MINIMUM AND 0.6350 INCHES MAXIMUM IN
MATERIALSTEEL COMP 630 OR STEEL COMP XM-12
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 90-9088-5?
90-9088-5 is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What is the NSN for 90-9088-5?
90-9088-5 is cataloged in the U.S. Government catalog under NSN 5340-00-549-3369. 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.