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81576PC11078A — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

81576PC11078A: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: IRON, thickness: 0.688 INCHES NOMINAL IN, flange_width: 2.188 INCHES NOMINAL IN, flange_length: 3.500 INCHES NOMINAL IN, style_designator: OVAL, ONE BOLT HOLE CIRCLE, flange_end_radius: 0.406 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-289-3603, 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
81576PC11078A
NSN: 4730-00-289-3603
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
materialIRON
thickness0.688 INCHES NOMINAL IN
flange_width2.188 INCHES NOMINAL IN
flange_length3.500 INCHES NOMINAL IN
style_designatorOVAL, ONE BOLT HOLE CIRCLE
flange_end_radius0.406 INCHES NOMINAL IN
bolt_hole_diameter0.406 INCHES NOMINAL IN
bolt_hole_quantity2
nominal_thread_size1.250 INCHES IN
bolt_circle_diameter2.688 INCHES NOMINAL IN
flange_section_stylePLAIN FACE
face_seating_surface_conditionMACHINED
NSN4730-00-289-3603
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 81576PC11078A · 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
•
FLANGE END RADIUS: 0.406 INCHES NOMINAL IN
•
FACE SEATING SURFACE CONDITION: MACHINED
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 1.250 INCHES IN
•
FLANGE SECTION STYLE: PLAIN FACE
•
STYLE DESIGNATOR: OVAL, ONE BOLT HOLE CIRCLE
•
BOLT HOLE DIAMETER: 0.406 INCHES NOMINAL IN
•
FLANGE LENGTH: 3.500 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
TECHNICAL CHARACTERISTICS
FLANGE END RADIUS0.406 INCHES NOMINAL IN
FACE SEATING SURFACE CONDITIONMACHINED
NOMINAL PIPE SIZE FOR WHICH DESIGNED1.250 INCHES IN
FLANGE SECTION STYLEPLAIN FACE
STYLE DESIGNATOROVAL, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.406 INCHES NOMINAL IN
FLANGE LENGTH3.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.250 INCHES IN
BOLT HOLE QUANTITY2
BOLT CIRCLE DIAMETER2.688 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 4
75035PC11078AReference document
Same NSN cross-reference
Reference document — Secondary reference
11078-AReference document
Same NSN cross-reference
Reference document — Secondary reference
75029PC11078AReference document
Same NSN cross-reference
Reference document — Secondary reference
81574PC11078AReference document
Same NSN cross-reference
Reference document — Secondary reference
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 81576PC11078A?
81576PC11078A is a FLANGE,PIPE.
What parts can replace 81576PC11078A?
There are 4 known substitutes for 81576PC11078A: 75035PC11078A, 11078-A, 75029PC11078A and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81576PC11078A?
81576PC11078A is cataloged in the U.S. Government catalog under NSN 4730-00-289-3603. 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.