21820 FN 17 — RETAINER,SPRING

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

21820 FN 17: RETAINER,SPRING.

The RETAINER,SPRING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-062-3837, 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

21820 FN 17

NSN: 4820-01-062-3837
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)

SPECIFICATIONS

Part Number	21820 FN 17
NSN	4820-01-062-3837

COMPONENT DIAGRAM

KEY FEATURES

•

GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM ALLOY; ANODIZED; CONFIGURATION STEPPED DISC W/CENTER HOLE AND 4 UNIFORMLY SPACED ADDITIONAL HOLES; 1.651 IN. OD; 0.190 IN. THK; 0.331 IN. OVERALL; CENTER HOLE DIA 0.375 IN. W/COUNTERBORE 0.473 IN. DIA AND 0.091 IN. DEEP; 4 0.223 IN. DIA HOLES EQUALLY SPACED ON DISK FACE ON 0.790 IN. BOLT CIRCLE IN

TECHNICAL CHARACTERISTICS

GENERAL CHARACTERISTICS ITEM DESCRIPTION

ALUMINUM ALLOY; ANODIZED; CONFIGURATION STEPPED DISC W/CENTER HOLE AND 4 UNIFORMLY SPACED ADDITIONAL HOLES; 1.651 IN. OD; 0.190 IN. THK; 0.331 IN. OVERALL; CENTER HOLE DIA 0.375 IN. W/COUNTERBORE 0.473 IN. DIA AND 0.091 IN. DEEP; 4 0.223 IN. DIA HOLES EQUALLY SPACED ON DISK FACE ON 0.790 IN. BOLT CIRCLE IN

SUBSTITUTES & CROSS-REFERENCES 2

20435-001Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

20435-001 FIND 30Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 21820 FN 17?

21820 FN 17 is a RETAINER,SPRING.

What parts can replace 21820 FN 17?

There are 2 known substitutes for 21820 FN 17: 20435-001, 20435-001 FIND 30. Substitute compatibility should be verified for your specific system.

What is the NSN for 21820 FN 17?

21820 FN 17 is cataloged in the U.S. Government catalog under NSN 4820-01-062-3837. This indicates validated use in U.S. government and defense supply chains.

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