PartsTable
Technical Data Sheet
Download PDF

2603-4 — COUPLING,SHAFT,FLEXIBLE

✓ Government record, cited
Bestway · GATE VALVE
PRODUCT OVERVIEW

2603-4: COUPLING,SHAFT,FLEXIBLE.

The COUPLING,SHAFT,FLEXIBLE is a Bestway industrial component. Key specifications include style_designator: THIN DOUBLE HEAD, wrenching_surface_size: 0.3125 INCHES NOMINAL FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-165-4916, 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
2603-4
NSN: 4820-00-165-4916
NIINs: 001654916, 011921794, 012707177, 012908144, 016565065
FSC: 4820 — Valves, Nonpowered
CAGE: 93835 — PARKER HANNIFIN CORPORATION DIV HYDRAULIC SYSTEMS DIVISION (USA)
SPECIFICATIONS
style_designatorTHIN DOUBLE HEAD
wrenching_surface_size0.3125 INCHES NOMINAL FIRST END IN
NSN4820-00-165-4916
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2603-4 · Bestway ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM,3.000 IN.H,2.500 IN.W,4.250 IN. LG IN
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO.
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONALUMINUM,3.000 IN.H,2.500 IN.W,4.250 IN. LG IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO.
SUBSTITUTES & CROSS-REFERENCES 1
868C888P5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — mutilation
Ready to buy 2603-4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2603-4?
2603-4 is a COUPLING,SHAFT,FLEXIBLE manufactured by Bestway.
What parts can replace 2603-4?
There is 1 known substitute for 2603-4: 868C888P5. Substitute compatibility should be verified for your specific system.
What is the NSN for 2603-4?
2603-4 is cataloged in the U.S. Government catalog under NSN 4820-00-165-4916. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2603-4

✓ 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.