521-4812 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

521-4812: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include float_type: SINGLE, overall_length: 0.315 INCHES NOMINAL IN, air_inlet_shape: STRAIGHT, automatic_choke: INCLUDED, draft_direction: DOWN, insert_material: PLASTIC SINGLE MATING END. This part is cataloged in the U.S.

Government catalog under NSN 2910-01-133-4183, 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

521-4812

NSN: 2910-01-133-4183
NIINs: 011334183, 013353403
FSC: 2910 — Engine Fuel System Components, Nonaircraft
CAGE: 86403 — CHRYSLER CORP SERVICE AND PARTS OPNS (USA)

SPECIFICATIONS

float_type	SINGLE
overall_length	0.315 INCHES NOMINAL IN
air_inlet_shape	STRAIGHT
automatic_choke	INCLUDED
barrel_quantity	1
draft_direction	DOWN
insert_material	PLASTIC SINGLE MATING END
contact_material	COPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
overall_diameter	0.405 INCHES NOMINAL IN
accelerating_pump	INCLUDED
precious_material	GOLD
terminal_location	BACK SINGLE MATING END SINGLE CONTACT GROUPING
NSN	2910-01-133-4183

COMPONENT DIAGRAM

KEY FEATURES

•

AIR INLET FLANGE SHAPE: ROUND

•

FLOAT CHAMBER QUANTITY: 1

•

AIR INLET CONNECTION TYPE: FLANGE

•

AUTOMATIC CHOKE: INCLUDED

•

BARREL QUANTITY: 1

•

ACCELERATING PUMP: INCLUDED

•

DRAFT DIRECTION: DOWN

•

FLOAT TYPE: SINGLE

TECHNICAL CHARACTERISTICS

AIR INLET FLANGE SHAPE	ROUND
FLOAT CHAMBER QUANTITY	1
AIR INLET CONNECTION TYPE	FLANGE
AUTOMATIC CHOKE	INCLUDED
BARREL QUANTITY	1
ACCELERATING PUMP	INCLUDED
DRAFT DIRECTION	DOWN
FLOAT TYPE	SINGLE
AIR INLET SHAPE	STRAIGHT

SUBSTITUTES & CROSS-REFERENCES 2

0-8721Reference document

Same NSN cross-reference

Reference document — Secondary reference

R-8721AReference document

Same NSN cross-reference

Reference document — Secondary reference

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 521-4812?

521-4812 is a CONNECTOR,RECEPTACLE,ELECTRICAL.

What parts can replace 521-4812?

There are 2 known substitutes for 521-4812: 0-8721, R-8721A. Substitute compatibility should be verified for your specific system.

What is the NSN for 521-4812?

521-4812 is cataloged in the U.S. Government catalog under NSN 2910-01-133-4183. This indicates validated use in U.S. government and defense supply chains.

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521-4812 — CONNECTOR,RECEPTACLE,ELECTRICAL

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