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A0681-00 IT4 — STEM,FLUID VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

A0681-00 IT4: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, stem_actuating_end_type: THREADED INTERNALLY, valve_size_for_which_designed: 0.750 INCHES IN, valve_type_for_which_designed: GATE, valve_model_number_for_which_designed: 18S-FS3. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-423-1993, 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
A0681-00 IT4
NSN: 4820-01-423-1993
FSC: 4820 — Valves, Nonpowered
CAGE: 61661 — NEWMANS INC NEW JERSEY DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 410
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
stem_actuating_end_typeTHREADED INTERNALLY
valve_size_for_which_designed0.750 INCHES IN
valve_type_for_which_designedGATE
valve_model_number_for_which_designed18S-FS3
NSN4820-01-423-1993
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A0681-00 IT4 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
VALVE TYPE FOR WHICH DESIGNED: GATE
•
STEM ACTUATING END TYPE: THREADED INTERNALLY
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 18S-FS3
•
VALVE SIZE FOR WHICH DESIGNED: 0.750 INCHES IN
•
MATERIAL: STEEL COMP 410
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDGATE
STEM ACTUATING END TYPETHREADED INTERNALLY
VALVE MODEL NUMBER FOR WHICH DESIGNED18S-FS3
VALVE SIZE FOR WHICH DESIGNED0.750 INCHES IN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
MATERIALSTEEL COMP 410
SUBSTITUTES & CROSS-REFERENCES 2
18S-FS3 ITEM 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A0681-00Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A0681-00 IT4?
A0681-00 IT4 is a STEM,FLUID VALVE.
What parts can replace A0681-00 IT4?
There are 2 known substitutes for A0681-00 IT4: 18S-FS3 ITEM 4, A0681-00. Substitute compatibility should be verified for your specific system.
What is the NSN for A0681-00 IT4?
A0681-00 IT4 is cataloged in the U.S. Government catalog under NSN 4820-01-423-1993. 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.