857551 — RETAINER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

857551: RETAINER.

The RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, case_style: SQUARE, seal_width: 0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN, thread_class: 3A EXTERNAL A, indicator_type: DIAL W/POINTER, overall_length: 0.840 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2920-00-358-7590, 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

857551

NSN: 2920-00-358-7590
FSC: 2920 — Engine Electrical System Components, Nonaircraft
CAGE: 89749 — CLARK MATERIAL HANDLING COMPANY (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
case_style	SQUARE
seal_width	0.500 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
thread_class	3A EXTERNAL A
indicator_type	DIAL W/POINTER
overall_length	0.840 INCHES NOMINAL IN
inside_diameter	1.750 INCHES NOMINAL IN
connection_style	PLAIN
special_features	1 INCH HEX HEAD IN
style_designator	PLUG, MACHINE
thread_direction	RIGHT-HAND EXTERNAL
features_provided	ZERO ADJUSTER
NSN	2920-00-358-7590

COMPONENT DIAGRAM

SUBSTITUTES & CROSS-REFERENCES 3

21856Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

1253363Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

09-21856Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 857551?

857551 is a RETAINER.

What parts can replace 857551?

There are 3 known substitutes for 857551: 21856, 1253363, 09-21856. Substitute compatibility should be verified for your specific system.

What is the NSN for 857551?

857551 is cataloged in the U.S. Government catalog under NSN 2920-00-358-7590. This indicates validated use in U.S. government and defense supply chains.

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857551 — RETAINER

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