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Technical Data Sheet
PartsTable / COMPONENT / 300-8IN
300-8IN ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 1.560 INCHES NOMINAL IN, neck_height: 1.750 INCHES NOMINAL IN, flange_diameter: 15.000 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE, bolt_hole_diameter: 1.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-256-8512, 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
300-8IN
NSN: 4730-00-256-8512
FSC: 4730
CAGE: 63686 — THE WALWORTH COMPANY (USA)
SPECIFICATIONS
materialSTEEL
thickness1.560 INCHES NOMINAL IN
neck_height1.750 INCHES NOMINAL IN
flange_diameter15.000 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter1.000 INCHES NOMINAL IN
bolt_hole_quantity12
raised_face_height0.060 INCHES NOMINAL IN
bolt_circle_diameter13.000 INCHES NOMINAL IN
flange_section_styleRAISED FACE, RAISED NECK
raised_face_diameter10.260 INCHES NOMINAL IN
nondefinitive_spec/std_data16 TABLE AND 17 TABLE
NSN4730-00-256-8512
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 300-8IN · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FACE SEATING SURFACE CONDITION: MACHINED
•
NECK HEIGHT: 1.750 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 850.0 FAHRENHEIT GAS AND 850.0 FAHRENHEIT OIL AND 850.0 FAHRENHEIT WATER DEGF
•
OPERATING PRESSURE AND TYPE: 300.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
NONDEFINITIVE SPEC/STD DATA: 16 TABLE AND 17 TABLE
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
FLANGE SECTION STYLE: RAISED FACE, RAISED NECK
TECHNICAL CHARACTERISTICS (FLIS)
FACE SEATING SURFACE CONDITIONMACHINED
NECK HEIGHT1.750 INCHES NOMINAL IN
MATERIALSTEEL
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED850.0 FAHRENHEIT GAS AND 850.0 FAHRENHEIT OIL AND 850.0 FAHRENHEIT WATER DEGF
OPERATING PRESSURE AND TYPE300.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
NONDEFINITIVE SPEC/STD DATA16 TABLE AND 17 TABLE
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
FLANGE SECTION STYLERAISED FACE, RAISED NECK
BOLT HOLE DIAMETER1.000 INCHES NOMINAL IN
THICKNESS1.560 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
B16-5-1961Interchangeable
interchangeable cross-reference
interchangeable
7701-1Interchangeable
interchangeable cross-reference
interchangeable
GF11S1010CUInterchangeable
interchangeable cross-reference
interchangeable
B16.15Interchangeable
interchangeable cross-reference
interchangeable
MS51845-12Interchangeable
interchangeable cross-reference
interchangeable
WWP460CLASSAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 300-8IN?
300-8IN is a FLANGE,PIPE.
What parts can replace 300-8IN?
There are 17 known substitutes for 300-8IN: B16-5-1961, 7701-1, GF11S1010CU and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 300-8IN?
300-8IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-256-8512. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026