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2640-330 — STRAINER ELEMENT,SEDIMENT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2640-330: STRAINER ELEMENT,SEDIMENT.

The STRAINER ELEMENT,SEDIMENT is a the manufacturer industrial component. Key specifications include material: NICKEL OVERALL, nut_style: HEXAGON, nut_height: 1.656 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, shoulder_width: 0.281 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-244-2260, 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
2640-330
NSN: 4730-01-244-2260
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL OVERALL
nut_styleHEXAGON
nut_height1.656 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
shoulder_width0.281 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats4.250 INCHES NOMINAL IN
nominal_thread_size3.250 INCHES IN
shoulder_step_width0.500 INCHES NOMINAL IN
smallest_inside_diameter1.406 INCHES NOMINAL IN
thread_quantity_per_inch12
NSN4730-01-244-2260
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2640-330 · 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
•
WIDTH ACROSS FLATS: 4.250 INCHES NOMINAL IN
•
SHOULDER STEP WIDTH: 0.500 INCHES NOMINAL IN
•
SHOULDER WIDTH: 0.281 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 3.250 INCHES IN
•
NUT HEIGHT: 1.656 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS4.250 INCHES NOMINAL IN
SHOULDER STEP WIDTH0.500 INCHES NOMINAL IN
SHOULDER WIDTH0.281 INCHES NOMINAL IN
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE3.250 INCHES IN
NUT HEIGHT1.656 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 3
2640-330 PC 16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
845-2444821Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
845-2444821 PC 16Same 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 2640-330?
2640-330 is a STRAINER ELEMENT,SEDIMENT.
What parts can replace 2640-330?
There are 3 known substitutes for 2640-330: 2640-330 PC 16, 845-2444821, 845-2444821 PC 16. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-330?
2640-330 is cataloged in the U.S. Government catalog under NSN 4730-01-244-2260. 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.