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12103M503A — ARRESTER,ELECTRICAL SURGE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

12103M503A: ARRESTER,ELECTRICAL SURGE.

The ARRESTER,ELECTRICAL SURGE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_width: 2.531 INCHES MAXIMUM IN, head_style: HEXAGON, shaft_type: ROUND, V FLATTED SINGLE ACTUATOR, body_height: 3.781 INCHES MAXIMUM IN, body_length: 2.906 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-500-9925, 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
12103M503A
NSN: 4820-01-500-9925
FSC: 4820 — Valves, Nonpowered
CAGE: 72166 — B.W. ELLIOTT MANUFACTURING CO., LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width2.531 INCHES MAXIMUM IN
head_styleHEXAGON
shaft_typeROUND, V FLATTED SINGLE ACTUATOR
body_height3.781 INCHES MAXIMUM IN
body_length2.906 INCHES MAXIMUM IN
head_height0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN
shaft_length0.940 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class2A A
core_materialIRON
overall_width3.125 INCHES MAXIMUM IN
pole_quantity6 EACH SECTION REAR
NSN4820-01-500-9925
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 12103M503A · OEM ⚠ 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
SUBSTITUTES & CROSS-REFERENCES 2
12103-503MODReference document
Same NSN cross-reference
Reference document — Secondary reference
12103Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 12103M503A?
12103M503A is a ARRESTER,ELECTRICAL SURGE.
What parts can replace 12103M503A?
There are 2 known substitutes for 12103M503A: 12103-503MOD, 12103. Substitute compatibility should be verified for your specific system.
What is the NSN for 12103M503A?
12103M503A is cataloged in the U.S. Government catalog under NSN 4820-01-500-9925. 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.