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3642-177 — STEM,PNEUMATIC VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3642-177: STEM,PNEUMATIC VALVE.

The STEM,PNEUMATIC VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: SPECIAL AIRCRAFT AND ENGINE SUPPORT EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-027-8380, 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
3642-177
NSN: 4820-01-027-8380
FSC: 4820 — Valves, Nonpowered
CAGE: 27783 — SCHRADER-BRIDGEPORT INTERNATIONAL INC DBA SCHRADER AUTOMOTIVE (USA)
SPECIFICATIONS
end_item_identificationSPECIAL AIRCRAFT AND ENGINE SUPPORT EQUIPMENT
general_characteristics_item_descriptionCRES AISI 303 COND A,CORE END EXTERNAL THD SIZE 0.302-32,MTG END EXTERNAL THD SIZE 1/8-27 NPT,O/A LG 1.031 IN.,7/16 IN. HEX WRENCHING FEATURE IN
NSN4820-01-027-8380
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3642-177 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES AISI 303 COND A,CORE END EXTERNAL THD SIZE 0.302-32,MTG END EXTERNAL THD SIZE 1/8-27 NPT,O/A LG 1.031 IN.,7/16 IN. HEX WRENCHING FEATURE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES AISI 303 COND A,CORE END EXTERNAL THD SIZE 0.302-32,MTG END EXTERNAL THD SIZE 1/8-27 NPT,O/A LG 1.031 IN.,7/16 IN. HEX WRENCHING FEATURE IN
END ITEM IDENTIFICATIONSPECIAL AIRCRAFT AND ENGINE SUPPORT EQUIPMENT
SUBSTITUTES & CROSS-REFERENCES 1
3642-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 3642-177?
3642-177 is a STEM,PNEUMATIC VALVE.
What parts can replace 3642-177?
There is 1 known substitute for 3642-177: 3642-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 3642-177?
3642-177 is cataloged in the U.S. Government catalog under NSN 4820-01-027-8380. 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.