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405739 — PISTON,ACCUMULATOR

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

405739: PISTON,ACCUMULATOR.

The PISTON,ACCUMULATOR is a the manufacturer industrial component. Key specifications include design_form: PREBENT, special_features: U/O TF33 ACFT ENG. This part is cataloged in the U.S.

Government catalog under NSN 4710-00-779-2649, 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
405739
NSN: 4710-00-779-2649
NIINs: 007792649, 011831172
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
design_formPREBENT
special_featuresU/O TF33 ACFT ENG
NSN4710-00-779-2649
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 405739 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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DESIGN FORM: PREBENT
TECHNICAL CHARACTERISTICS
DESIGN FORMPREBENT
SPECIAL FEATURESU/O TF33 ACFT ENG
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 demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 405739?
405739 is a PISTON,ACCUMULATOR.
What is the NSN for 405739?
405739 is cataloged in the U.S. Government catalog under NSN 4710-00-779-2649. 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.