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Technical Data Sheet
581-489 ✓ Verified by PartsTable
· PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: GLASS ENCLOSURE, design_form: PREBENT, thread_class: 2B ALL ENDS, overall_length: 0.265 INCHES NOMINAL IN, wall_thickness: 0.049 INCHES NOMINAL IN, mounting_method: TERMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-00-240-8991, 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
581-489
NSN: 4710-00-240-8991
FSC: 4710
CAGE: 02280 — AMERICAN HOIST AND DERRICK CO
SPECIFICATIONS
materialGLASS ENCLOSURE
design_formPREBENT
thread_class2B ALL ENDS
overall_length0.265 INCHES NOMINAL IN
wall_thickness0.049 INCHES NOMINAL IN
mounting_methodTERMINAL
terminal_length1.000 INCHES MINIMUM IN
overall_diameter0.096 INCHES NOMINAL IN
thread_directionRIGHT-HAND ALL ENDS
features_providedHERMETICALLY SEALED CASE
seat_angle_in_deg37.000 ALL ENDS
mating_end_quantity2 ALL ENDS
NSN4710-00-240-8991
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — PN: 581-489 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
MATERIAL DOCUMENT AND CLASSIFICATION: AISI C1010 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1010 ASSN STD SINGLE MATERIAL RESPONSE TUBING
MATERIAL: STEEL ALL ENDS
DESIGN FORM: PREBENT
SEAT ANGLE IN DEG: 37.000 ALL ENDS
TUBE OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
END CONNECTION STYLE: FLARE ALL ENDS
THREAD SERIES DESIGNATOR: UNF ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAISI C1010 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1010 ASSN STD SINGLE MATERIAL RESPONSE TUBING
MATERIALSTEEL ALL ENDS
DESIGN FORMPREBENT
SEAT ANGLE IN DEG37.000 ALL ENDS
TUBE OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
END CONNECTION STYLEFLARE ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS
THREAD CLASS2B ALL ENDS
MATING END QUANTITY2 ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
1N4372Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 581-489?
581-489 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 581-489?
There is 1 known substitute for 581-489: 1N4372. Substitute compatibility should be verified for your specific system.
What is the NSN for 581-489?
581-489 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-00-240-8991. This indicates validated use in U.S. government and defense supply chains.
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