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Technical Data Sheet
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311A40 — 311A40

✓ Government record, cited
THE HELLAN STRAINER CO DIV SISTER COMPANY OF CLEVELAND GEAR, SUBS. OF INDUSTRIAL MFG. C · HOSE FITTING
PRODUCT OVERVIEW

311A40: 311A40.

The 311A40 is a THE HELLAN STRAINER CO DIV SISTER COMPANY OF CLEVELAND GEAR, SUBS. OF INDUSTRIAL MFG. C industrial component.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-453-1440, 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
311A40
NSN: 4730-01-453-1440
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 1QZK3 — THE HELLAN STRAINER CO DIV SISTER COMPANY OF CLEVELAND GEAR, SUBS. OF INDUSTRIAL MFG. C (USA)
SPECIFICATIONS
Part Number311A40
ManufacturerTHE HELLAN STRAINER CO DIV SISTER COMPANY OF CLEVELAND GEAR, SUBS. OF INDUSTRIAL MFG. C
NSN4730-01-453-1440
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 311A40 · THE HELLAN STRAINER CO DIV SISTER COMPANY OF CLEVELAND GEAR, SUBS. OF INDUSTRIAL MFG. C ⚠ 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
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MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONCIMMARON CLASS AO
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311A40?
311A40 is a 311A40 manufactured by THE HELLAN STRAINER CO DIV SISTER COMPANY OF CLEVELAND GEAR, SUBS. OF INDUSTRIAL MFG. C.
What is the NSN for 311A40?
311A40 is cataloged in the U.S. Government catalog under NSN 4730-01-453-1440. 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.