11664571 — WASHER,FLAT

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

11664571: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.120 INCHES NOMINAL IN, hole_diameter: 0.510 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM, overall_diameter: 2.000 INCHES NOMINAL IN, features_provided: CASEHARDENED, surface_treatment: CADMIUM AND ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-470-4271, 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

11664571

NSN: 5310-00-470-4271
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)

SPECIFICATIONS

thickness	0.120 INCHES NOMINAL IN
hole_diameter	0.510 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
hardness_rating	35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
overall_diameter	2.000 INCHES NOMINAL IN
features_provided	CASEHARDENED
surface_treatment	CADMIUM AND ZINC OVERALL
peripheral_shape_style	ROUND
center_hole_shape_style	ROUND
cross-sectional_shape_style	RECTANGULAR
surface_treatment_document_and_classification	QQ-P-416,TYPE2,CLASS FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z- 325,TYPE2,CLASS3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN	5310-00-470-4271

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE2,CLASS FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z- 325,TYPE2,CLASS3 FED SPEC 2ND TREATMENT RESPONSE OVERALL

•

OVERALL DIAMETER: 2.000 INCHES NOMINAL IN

•

HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM

•

CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR

•

FEATURES PROVIDED: CASEHARDENED

•

SURFACE TREATMENT: CADMIUM AND ZINC OVERALL

•

PERIPHERAL SHAPE STYLE: ROUND

•

CENTER HOLE SHAPE STYLE: ROUND

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE2,CLASS FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z- 325,TYPE2,CLASS3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
OVERALL DIAMETER	2.000 INCHES NOMINAL IN
HARDNESS RATING	35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
FEATURES PROVIDED	CASEHARDENED
SURFACE TREATMENT	CADMIUM AND ZINC OVERALL
PERIPHERAL SHAPE STYLE	ROUND
CENTER HOLE SHAPE STYLE	ROUND
HOLE DIAMETER	0.510 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
THICKNESS	0.120 INCHES NOMINAL IN

OTHER ITEMS IN FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540

SUBSTITUTES & CROSS-REFERENCES 2

5310004704271Reference document

Same NSN cross-reference

Reference document — Secondary reference

60-28-9501 MODReference document

Same NSN cross-reference

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

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 11664571?

11664571 is a WASHER,FLAT.

What parts can replace 11664571?

There are 2 known substitutes for 11664571: 5310004704271, 60-28-9501 MOD. Substitute compatibility should be verified for your specific system.

What is the NSN for 11664571?

11664571 is cataloged in the U.S. Government catalog under NSN 5310-00-470-4271. This indicates validated use in U.S. government and defense supply chains.

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11664571 — WASHER,FLAT

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