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303109 — TRANSFORMER,POWER

✓ Government record, cited
EMSA · ORING SEAL
PRODUCT OVERVIEW

303109: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a EMSA industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, overall_width: 0.610 INCHES MAXIMUM IN, thread_length: 0.250 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-132-3124, 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
303109
NSN: 5340-00-132-3124
NIINs: 001323124, 005766726, 010784324, 011452493
FSC: 5340 — Hardware, Commercial
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
overall_width0.610 INCHES MAXIMUM IN
thread_length0.250 INCHES MINIMUM IN
inclosure_typeFULLY INCLOSED
overall_height0.770 INCHES NOMINAL IN
overall_length1.000 INCHES NOMINAL IN
screw_materialSTEEL COMP 4140
fastener_length0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
mounting_methodTERMINAL SINGLE GROUP
NSN5340-00-132-3124
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 303109 MFR: EMSA ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
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 303109?
303109 is a TRANSFORMER,POWER manufactured by EMSA.
What is the NSN for 303109?
303109 is cataloged in the U.S. Government catalog under NSN 5340-00-132-3124. 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.