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20976618 — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

20976618: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include flange_width: 3.000 INCHES NOMINAL IN, flange_length: 3.000 INCHES NOMINAL IN, style_designator: RECTANGULAR, WITH BOLT HOLES, bolt_hole_diameter: 0.529 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN, flange_section_style: BEVELED FACE, RAISED NECK, part_name_assigned_by_controlling_agency: FLANGE, PIPE VENTED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-596-9852, 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
20976618
NSN: 4730-01-596-9852
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
flange_width3.000 INCHES NOMINAL IN
flange_length3.000 INCHES NOMINAL IN
style_designatorRECTANGULAR, WITH BOLT HOLES
bolt_hole_diameter0.529 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
flange_section_styleBEVELED FACE, RAISED NECK
part_name_assigned_by_controlling_agencyFLANGE, PIPE VENTED
outside_edge_to_bolt_hole_center_distance_along_width0.469 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.469 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_width2.062 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_length2.062 INCHES NOMINAL IN
NSN4730-01-596-9852
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20976618 · 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 SECTION STYLE: BEVELED FACE, RAISED NECK
•
STYLE DESIGNATOR: RECTANGULAR, WITH BOLT HOLES
•
BOLT HOLE DIAMETER: 0.529 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
•
FLANGE LENGTH: 3.000 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 2.062 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 2.062 INCHES NOMINAL IN
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH: 0.469 INCHES NOMINAL IN
•
FLANGE WIDTH: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SECTION STYLEBEVELED FACE, RAISED NECK
STYLE DESIGNATORRECTANGULAR, WITH BOLT HOLES
BOLT HOLE DIAMETER0.529 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
FLANGE LENGTH3.000 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH2.062 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH2.062 INCHES NOMINAL IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.469 INCHES NOMINAL IN
FLANGE WIDTH3.000 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFLANGE, PIPE VENTED
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.469 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20976618?
20976618 is a FLANGE,PIPE.
What is the NSN for 20976618?
20976618 is cataloged in the U.S. Government catalog under NSN 4730-01-596-9852. 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.