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3639381 — TUBE ASSEMBLY,AIR INTAKE

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

3639381: TUBE ASSEMBLY,AIR INTAKE.

The TUBE ASSEMBLY,AIR INTAKE is a the manufacturer industrial component. Key specifications include height: 0.425 INCHES NOMINAL IN, diameter: 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, material: STEEL COMP 303 OVERALL, head_style: FLAT CHAMFER, slot_width: 0.070 INCHES NOMINAL IN, slot_length: 0.650 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4710-00-650-4211, 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
3639381
NSN: 4710-00-650-4211
NIINs: 006504211, 015078654, 015585994
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
height0.425 INCHES NOMINAL IN
diameter0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
materialSTEEL COMP 303 OVERALL
head_styleFLAT CHAMFER
slot_width0.070 INCHES NOMINAL IN
slot_length0.650 INCHES NOMINAL IN
chamfer_length0.030 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES SHANK END
special_featuresNOT COMPATABLE WITH PART 36-3938. LENGTH DIFFERENCE
style_designatorSTRAIGHT
pin_chamfer_angle45.0 DEGREES NOMINAL
pin_head_diameter0.3230 INCHES MINIMUM AND 0.3250 INCHES MAXIMUM IN
NSN4710-00-650-4211
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 3639381 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,347 CRES,MIL-T-8606,0.625 IN. OD,0.035 WALL THKNS,ONE END FLANGED,OPPOSITE END BEADED,W/3.310 IN. L RUBBER TUBE AND CLAMP IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,347 CRES,MIL-T-8606,0.625 IN. OD,0.035 WALL THKNS,ONE END FLANGED,OPPOSITE END BEADED,W/3.310 IN. L RUBBER TUBE AND CLAMP IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 3639381?
3639381 is a TUBE ASSEMBLY,AIR INTAKE.
What is the NSN for 3639381?
3639381 is cataloged in the U.S. Government catalog under NSN 4710-00-650-4211. 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.