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A310540 — PUMP,COOLING SYSTEM,ENGINE

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

A310540: PUMP,COOLING SYSTEM,ENGINE.

The PUMP,COOLING SYSTEM,ENGINE is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include head_style: HEXAGON, thread_class: 2A A, thread_length: 0.375 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, internal_drive_style: TORQUE, nominal_thread_diameter: 0.190 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-006-3553, 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
A310540
NSN: 4720-00-006-3553
NIINs: 000063553, 014686687, 015540712
FSC: 4720 — Hose and Flexible Tubing
CAGE: U9143 — BAE SYSTEMS (OPERATIONS) LIMITED (GBR)
SPECIFICATIONS
head_styleHEXAGON
thread_class2A A
thread_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleTORQUE
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN4720-00-006-3553
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: A310540 · 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
•
MEASURING METHOD AND LENGTH: 12.375 INCHES NOMINAL WORKING IN
•
MINIMUM INSIDE BENDING RADIUS: 2.000 INCHES IN
•
CONNECTION STYLE: SWIVEL NUT FLARE FIRST END
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 0.550 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 0.562 INCHES FIRST END IN
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH12.375 INCHES NOMINAL WORKING IN
MINIMUM INSIDE BENDING RADIUS2.000 INCHES IN
CONNECTION STYLESWIVEL NUT FLARE FIRST END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.550 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
SEAT ANGLE30.0 DEGREES FIRST END
EXTERIOR COLORBROWN
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 A310540?
A310540 is a PUMP,COOLING SYSTEM,ENGINE.
What is the NSN for A310540?
A310540 is cataloged in the U.S. Government catalog under NSN 4720-00-006-3553. 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.