221822 008000 — WASHER,FLAT

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

221822 008000: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 1.6 MILLIMETERS MINIMUM AND 2.3 MILLIMETERS MAXIMUM MM, hole_diameter: 8.9 MILLIMETERS MINIMUM AND 9.1 MILLIMETERS MAXIMUM MM, hardness_rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM, overall_diameter: 18.4 MILLIMETERS MINIMUM AND 18.8 MILLIMETERS MAXIMUM MM, surface_treatment: CHROMATE ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-507-2223, 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

221822 008000

NSN: 5310-01-507-2223
FSC: 5310 — Nuts and Washers
CAGE: 64678 — DAIMLER TRUCK NORTH AMERICA LLC (USA)

SPECIFICATIONS

material	STEEL OVERALL
thickness	1.6 MILLIMETERS MINIMUM AND 2.3 MILLIMETERS MAXIMUM MM
hole_diameter	8.9 MILLIMETERS MINIMUM AND 9.1 MILLIMETERS MAXIMUM MM
hardness_rating	38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
overall_diameter	18.4 MILLIMETERS MINIMUM AND 18.8 MILLIMETERS MAXIMUM MM
special_features	MUST BE SUITABLY TREATED FOR RELIEF OF HYDROGEN EMBRITTLEMENT; CONFORMS IN ALL ESSENTIALS WITH ANSI B18.22M (NARROW SERIES) METRIC PLAIN WASHERS
surface_treatment	CHROMATE ZINC OVERALL
peripheral_shape_style	ROUND
supplementary_features	CAGE CALLS THIS: WASHER-FLAT,METRIC,HARDENED
center_hole_shape_style	ROUND
end_item_identification	TRUCK, M-915 SERIES, M-91612(LET); 2320-01-432-4847
cross-sectional_shape_style	RECTANGULAR
NSN	5310-01-507-2223

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 49-00005-403 MFR REF ALL TREATMENT RESPONSES OR 49-00005-203 MFR REF ALL TREATMENT RESPONSES OVERALL

•

OVERALL DIAMETER: 18.4 MILLIMETERS MINIMUM AND 18.8 MILLIMETERS MAXIMUM MM

•

SUPPLEMENTARY FEATURES: CAGE CALLS THIS: WASHER-FLAT,METRIC,HARDENED

•

HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM

•

CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR

•

SURFACE TREATMENT: CHROMATE ZINC OVERALL

•

PERIPHERAL SHAPE STYLE: ROUND

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	49-00005-403 MFR REF ALL TREATMENT RESPONSES OR 49-00005-203 MFR REF ALL TREATMENT RESPONSES OVERALL
OVERALL DIAMETER	18.4 MILLIMETERS MINIMUM AND 18.8 MILLIMETERS MAXIMUM MM
SUPPLEMENTARY FEATURES	CAGE CALLS THIS: WASHER-FLAT,METRIC,HARDENED
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
SPECIAL FEATURES	MUST BE SUITABLY TREATED FOR RELIEF OF HYDROGEN EMBRITTLEMENT; CONFORMS IN ALL ESSENTIALS WITH ANSI B18.22M (NARROW SERIES) METRIC PLAIN WASHERS
SURFACE TREATMENT	CHROMATE ZINC OVERALL
PERIPHERAL SHAPE STYLE	ROUND
END ITEM IDENTIFICATION	TRUCK, M-915 SERIES, M-91612(LET); 2320-01-432-4847
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 1

B18.22MReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 221822 008000?

221822 008000 is a WASHER,FLAT.

What parts can replace 221822 008000?

There is 1 known substitute for 221822 008000: B18.22M. Substitute compatibility should be verified for your specific system.

What is the NSN for 221822 008000?

221822 008000 is cataloged in the U.S. Government catalog under NSN 5310-01-507-2223. This indicates validated use in U.S. government and defense supply chains.

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221822 008000 — WASHER,FLAT

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