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556-00-03-250 — GUARD,MECHANICAL DRIVE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

556-00-03-250: GUARD,MECHANICAL DRIVE.

The GUARD,MECHANICAL DRIVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED EXTERNAL PIPE ALL ENDS, style_designator: CLOSE, end_item_identification: CARVER 14 X 10-20 ITEM 12 SPRINKLING PUMP. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-435-4673, 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
556-00-03-250
NSN: 4730-01-435-4673
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10941 — CARVER PUMP COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
style_designatorCLOSE
end_item_identificationCARVER 14 X 10-20 ITEM 12 SPRINKLING PUMP
NSN4730-01-435-4673
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 556-00-03-250 · 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
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: CLOSE
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORCLOSE
END ITEM IDENTIFICATIONCARVER 14 X 10-20 ITEM 12 SPRINKLING PUMP
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
999-7920-A-01 IT12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
999-7920-A-01Reference 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 556-00-03-250?
556-00-03-250 is a GUARD,MECHANICAL DRIVE.
What parts can replace 556-00-03-250?
There are 2 known substitutes for 556-00-03-250: 999-7920-A-01 IT12, 999-7920-A-01. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-00-03-250?
556-00-03-250 is cataloged in the U.S. Government catalog under NSN 4730-01-435-4673. 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.