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E-4685 ITEM 73 — HEAD,HYDRAULIC MOTOR-PUMP

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

E-4685 ITEM 73: HEAD,HYDRAULIC MOTOR-PUMP.

The HEAD,HYDRAULIC MOTOR-PUMP is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-435-7317, 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
E-4685 ITEM 73
NSN: 4730-01-435-7317
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 07524 — DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleHEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
nominal_thread_size0.250 INCHES INTERNAL IN
end_item_identificationBOB HOPE CLASS T-AKR 300
thread_series_designatorNPT EXTERNAL
nominal_pipe_size_for_which_designed0.250 INCHES IN
NSN4730-01-435-7317
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: E-4685 ITEM 73 · 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
•
HEAD TYPE: SOLID
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.250 INCHES IN
•
CONNECTION STYLE: PLAIN
•
DRIVE END STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 0.250 INCHES INTERNAL IN
•
BODY TYPE: SOLID
TECHNICAL CHARACTERISTICS
HEAD TYPESOLID
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.250 INCHES IN
CONNECTION STYLEPLAIN
DRIVE END STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.250 INCHES INTERNAL IN
BODY TYPESOLID
END ITEM IDENTIFICATIONBOB HOPE CLASS T-AKR 300
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT EXTERNAL
SUBSTITUTES & CROSS-REFERENCES 1
E-4685Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 E-4685 ITEM 73?
E-4685 ITEM 73 is a HEAD,HYDRAULIC MOTOR-PUMP.
What parts can replace E-4685 ITEM 73?
There is 1 known substitute for E-4685 ITEM 73: E-4685. Substitute compatibility should be verified for your specific system.
What is the NSN for E-4685 ITEM 73?
E-4685 ITEM 73 is cataloged in the U.S. Government catalog under NSN 4730-01-435-7317. 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.