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2640-002 — CARTRIDGE,NEEDLE VALVE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

2640-002: CARTRIDGE,NEEDLE VALVE.

The CARTRIDGE,NEEDLE VALVE is a the manufacturer industrial component. Key specifications include body_length: 1.062 INCHES NOMINAL IN, body_diameter: 0.372 INCHES NOMINAL IN, terminal_type: WIRE LEAD, thread_length: 0.437 INCHES NOMINAL SINGLE THREADED BUSHING IN, mounting_method: THREADED BUSHING, style_designator: CYLINDRICAL W/FLANGE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-201-8097, 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
MRO→ MRO_GENERAL→ 2640-002
NSN: 4820-01-201-8097
NIINs: 012018097, 013314397, 013471584
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
body_length1.062 INCHES NOMINAL IN
body_diameter0.372 INCHES NOMINAL IN
terminal_typeWIRE LEAD
thread_length0.437 INCHES NOMINAL SINGLE THREADED BUSHING IN
mounting_methodTHREADED BUSHING
style_designatorCYLINDRICAL W/FLANGE
width_across_flats0.578 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES SINGLE THREADED BUSHING IN
contact_adjustabilityACTUATION POINT NOT ADJUSTABLE
contact_action_stimulusINCREASE
contact_stimulus_rating215.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT
media_for_which_designedGAS
NSN4820-01-201-8097
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2640-002 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESNICKEL COPPER ALLOY QQ-N-281 BODY;ALUMINUM BRONZE QQ-B-679 STEM;CORROSION RESISTANT STEEL HEXAGON PLUG;BUNA-N MIL-P-5516 O-RINGS;BODY OUTBOARD,0.562-18UNF-2A THD;PLUG 0.562-18UNF-2A THD;O-RINGS 0.468 IN. ID BY 0.078 IN. COUNTERSUNK;MAXIMUM WP 3000 PSI A
SUBSTITUTES & CROSS-REFERENCES 3
SS845-1889751Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
73643-67X4 PIECE 7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SS845-1889751ASReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2640-002?
2640-002 is a CARTRIDGE,NEEDLE VALVE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 2640-002?
There are 3 known substitutes for 2640-002: SS845-1889751, 73643-67X4 PIECE 7, SS845-1889751AS. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-002?
2640-002 is cataloged in the U.S. Government catalog under NSN 4820-01-201-8097. 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.