PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1258FY
1258FY ✓ 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 HOSE ASSEMBLY,METALLIC is a the manufacturer industrial component. Key specifications include connection_type: UNTHREADED EXTERNAL TUBE FIRST END, inside_diameter: 0.500 INCHES NOMINAL IN, outside_diameter: 0.921 INCHES NOMINAL IN, features_provided: IDENTICAL ENDS, operating_pressure: 450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS, end_connection_design: STRAIGHT FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-765-8514, 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
1258FY
NSN: 4720-00-765-8514
FSC: 4720
CAGE: 70510 — HYSPAN PRECISION PRODUCTS, INC. (USA)
SPECIFICATIONS
connection_typeUNTHREADED EXTERNAL TUBE FIRST END
inside_diameter0.500 INCHES NOMINAL IN
outside_diameter0.921 INCHES NOMINAL IN
features_providedIDENTICAL ENDS
operating_pressure450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
end_connection_designSTRAIGHT FIRST END
hydrostatic_test_pressure2300.0 POUNDS PER SQUARE INCH LBS
inner_conveying_tube_styleANNULAR CLOSE-PITCH CORRUGATED
cross-sectional_shape_styleROUND
measuring_method_and_length10.000 INCHES NOMINAL OVERALL IN
minimum_inside_bending_radius6.500 INCHES IN
layer_composition_and_locationOUTER LAYER BRAIDED BRONZE WIRE
NSN4720-00-765-8514
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1258FY · 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
•
OUTSIDE DIAMETER: 0.921 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
MINIMUM INSIDE BENDING RADIUS: 6.500 INCHES IN
•
INNER CONVEYING TUBE STYLE: ANNULAR CLOSE-PITCH CORRUGATED
•
OPERATING PRESSURE: 450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
•
FEATURES PROVIDED: IDENTICAL ENDS
•
LAYER COMPOSITION AND LOCATION: OUTER LAYER BRAIDED BRONZE WIRE
•
MEASURING METHOD AND LENGTH: 10.000 INCHES NOMINAL OVERALL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.921 INCHES NOMINAL IN
INSIDE DIAMETER0.500 INCHES NOMINAL IN
MINIMUM INSIDE BENDING RADIUS6.500 INCHES IN
INNER CONVEYING TUBE STYLEANNULAR CLOSE-PITCH CORRUGATED
OPERATING PRESSURE450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
FEATURES PROVIDEDIDENTICAL ENDS
LAYER COMPOSITION AND LOCATIONOUTER LAYER BRAIDED BRONZE WIRE
MEASURING METHOD AND LENGTH10.000 INCHES NOMINAL OVERALL IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST END IN
END CONNECTION DESIGNSTRAIGHT FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
PA-0090-1Interchangeable
interchangeable cross-reference
interchangeable
VAF12Interchangeable
interchangeable cross-reference
interchangeable
2020FInterchangeable
interchangeable cross-reference
interchangeable
J4FCInterchangeable
interchangeable cross-reference
interchangeable
04250994600908Interchangeable
interchangeable cross-reference
interchangeable
01342Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1258FY?
1258FY is a HOSE ASSEMBLY,METALLIC.
What parts can replace 1258FY?
There are 27 known substitutes for 1258FY: PA-0090-1, VAF12, 2020F and 24 more. Substitute compatibility should be verified for your specific system.
Is 1258FY still available?
1258FY 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