21858-2 — SUPPORT,RESISTOR

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

21858-2: SUPPORT,RESISTOR.

The SUPPORT,RESISTOR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.340 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-021-8582, 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

21858-2

NSN: 5310-00-021-8582
NIINs: 000218582, 010561193
FSC: 5310 — Nuts and Washers
CAGE: 24617 — GENERAL MOTORS CORP (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	HEXAGON
nut_height	0.340 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
thread_class	2B
thread_series	UNF
thread_direction	RIGHT-HAND
width_across_flats	0.7280 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
nominal_thread_size	0.438 INCHES IN
bearing_surface_type	CHAMFERED OR WASHER FACED
thread_quantity_per_inch	20
nondefinitive_spec/std_data	A TYPE
material_document_and_classification	QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-00-021-8582

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.7280 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN

•

THREAD SERIES: UNF

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.438 INCHES IN

•

NONDEFINITIVE SPEC/STD DATA: A TYPE

•

NUT HEIGHT: 0.340 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN

•

NUT STYLE: HEXAGON

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.7280 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
THREAD SERIES	UNF
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.438 INCHES IN
NONDEFINITIVE SPEC/STD DATA	A TYPE
NUT HEIGHT	0.340 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
NUT STYLE	HEXAGON
THREAD CLASS	2B
THREAD QUANTITY PER INCH	20

SUBSTITUTES & CROSS-REFERENCES 6

4619Reference document

Same NSN cross-reference

Reference document — Secondary reference

31566Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

FFB571TYPEAReference document

Same NSN cross-reference

Reference document — Identification reference

4204Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

5310-021-8582Reference document

Same NSN cross-reference

Reference document — Informative reference only

32689Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 21858-2?

21858-2 is a SUPPORT,RESISTOR.

What parts can replace 21858-2?

There are 6 known substitutes for 21858-2: 4619, 31566, FFB571TYPEA and 3 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 21858-2?

21858-2 is cataloged in the U.S. Government catalog under NSN 5310-00-021-8582. This indicates validated use in U.S. government and defense supply chains.

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