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20976609 — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

20976609: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL, flange_width: 3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN, flange_length: 3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN, special_features: OPTIONAL MATERIAL IS STEEL CASTING PRECISSION INVESTMENT AMS 5334A, COND AS CAST A, style_designator: RECTANGULAR, WITH BOLT HOLES, bolt_hole_diameter: 0.653 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-596-9840, 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
20976609
NSN: 4730-01-596-9840
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
materialSTEEL
flange_width3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN
flange_length3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN
special_featuresOPTIONAL MATERIAL IS STEEL CASTING PRECISSION INVESTMENT AMS 5334A, COND AS CAST A
style_designatorRECTANGULAR, WITH BOLT HOLES
bolt_hole_diameter0.653 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
material_document_and_classificationAISI 1015-1025 ASSN STD SINGLE MATERIAL RESPONSE
outside_edge_to_bolt_hole_center_distance_along_width0.500 INCHES NOMINAL IN
outside_edge_to_bolt_hole_center_distance_along_length0.50 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_width2.500 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_length2.500 INCHES NOMINAL IN
NSN4730-01-596-9840
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20976609 · 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
•
STYLE DESIGNATOR: RECTANGULAR, WITH BOLT HOLES
•
BOLT HOLE DIAMETER: 0.653 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 1015-1025 ASSN STD SINGLE MATERIAL RESPONSE
•
FLANGE LENGTH: 3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 2.500 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 2.500 INCHES NOMINAL IN
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH: 0.50 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRECTANGULAR, WITH BOLT HOLES
BOLT HOLE DIAMETER0.653 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 1015-1025 ASSN STD SINGLE MATERIAL RESPONSE
FLANGE LENGTH3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH2.500 INCHES NOMINAL IN
SPECIAL FEATURESOPTIONAL MATERIAL IS STEEL CASTING PRECISSION INVESTMENT AMS 5334A, COND AS CAST A
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH2.500 INCHES NOMINAL IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.50 INCHES NOMINAL IN
FLANGE WIDTH3.47 INCHES MINIMUM AND 3.52 INCHES MAXIMUM IN
MATERIALSTEEL
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 20976609?
20976609 is a FLANGE,PIPE.
What is the NSN for 20976609?
20976609 is cataloged in the U.S. Government catalog under NSN 4730-01-596-9840. 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.