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9644-20C — FLANGE,PIPE,SWIVEL RETAINING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

9644-20C: FLANGE,PIPE,SWIVEL RETAINING.

The FLANGE,PIPE,SWIVEL RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thickness: 0.229 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN, flange_width: 2.188 INCHES NOMINAL IN, recess_depth: 0.136 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN, recess_diameter: 1.854 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN, style_designator: SQUARE, ONE BOLT HOLE CIRCLE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-061-4155, 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
9644-20C
NSN: 4730-01-061-4155
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thickness0.229 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
flange_width2.188 INCHES NOMINAL IN
recess_depth0.136 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
recess_diameter1.854 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN
style_designatorSQUARE, ONE BOLT HOLE CIRCLE
surface_treatmentPASSIVATE
bolt_hole_diameter0.266 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
bolt_hole_quantity4
bolt_circle_diameter1.688 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN
flange_section_stylePLAIN RECESSED FACE
face_seating_surface_conditionMACHINED
NSN4730-01-061-4155
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 9644-20C · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-27272 MIL SPEC SINGLE TREATMENT RESPONSE
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FLANGE SECTION STYLE: PLAIN RECESSED FACE
•
STYLE DESIGNATOR: SQUARE, ONE BOLT HOLE CIRCLE
•
BOLT HOLE DIAMETER: 0.266 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 CL 304 COND A FED SPEC SINGLE MATERIAL RESPONSE
•
RECESS DEPTH: 0.136 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
•
RECESS DIAMETER: 1.854 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FACE SEATING SURFACE CONDITIONMACHINED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-27272 MIL SPEC SINGLE TREATMENT RESPONSE
FLANGE SECTION STYLEPLAIN RECESSED FACE
STYLE DESIGNATORSQUARE, ONE BOLT HOLE CIRCLE
BOLT HOLE DIAMETER0.266 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 CL 304 COND A FED SPEC SINGLE MATERIAL RESPONSE
RECESS DEPTH0.136 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
RECESS DIAMETER1.854 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN
BOLT HOLE QUANTITY4
BOLT CIRCLE DIAMETER1.688 INCHES MINIMUM AND 1.698 INCHES MAXIMUM 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 1
MS27077-20CSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9644-20C?
9644-20C is a FLANGE,PIPE,SWIVEL RETAINING.
What parts can replace 9644-20C?
There is 1 known substitute for 9644-20C: MS27077-20C. Substitute compatibility should be verified for your specific system.
What is the NSN for 9644-20C?
9644-20C is cataloged in the U.S. Government catalog under NSN 4730-01-061-4155. 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.