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PartsTable / COMPONENT / 740004-1
740004-1 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The VALVE,PILOT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BAND, overall_width: 1.250 INCHES NOMINAL IN, style_designator: T-BOLT, loop_inside_diameter: 3.125 INCHES NOMINAL IN, fastening_device_type: T-BOLT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-800-6486, 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
740004-1
NSN: 5340-00-800-6486
FSC: 5340
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BAND
overall_width1.250 INCHES NOMINAL IN
style_designatorT-BOLT
loop_inside_diameter3.125 INCHES NOMINAL IN
fastening_device_typeT-BOLT
NSN5340-00-800-6486
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 740004-1 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
•
MATERIAL: STEEL BOLT
•
STYLE DESIGNATOR: T-BOLT
•
LOOP INSIDE DIAMETER: 3.125 INCHES NOMINAL IN
•
FASTENING DEVICE TYPE: T-BOLT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL BOLT
MATERIALSTEEL CORROSION RESISTING BAND
STYLE DESIGNATORT-BOLT
LOOP INSIDE DIAMETER3.125 INCHES NOMINAL IN
FASTENING DEVICE TYPET-BOLT
OVERALL WIDTH1.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
56-082Interchangeable
interchangeable cross-reference
interchangeable
56-82Interchangeable
interchangeable cross-reference
interchangeable
SM-B-187571Interchangeable
interchangeable cross-reference
interchangeable
10377Interchangeable
interchangeable cross-reference
interchangeable
7400041Interchangeable
interchangeable cross-reference
interchangeable
2-10-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 740004-1?
740004-1 is a VALVE,PILOT.
What parts can replace 740004-1?
There are 11 known substitutes for 740004-1: 56-082, 56-82, SM-B-187571 and 8 more. Substitute compatibility should be verified for your specific system.
Is 740004-1 still available?
740004-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026