409B191 — WASHER,FLAT

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

409B191: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, thickness: 0.095 INCHES NOMINAL IN, hole_diameter: 0.252 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL C MINIMUM, overall_diameter: 0.590 INCHES NOMINAL IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-116-1209, 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

409B191

NSN: 5310-01-116-1209
FSC: 5310 — Nuts and Washers
CAGE: 17472 — EATON AEROSPACE LLC DBA EATON INOAC DIV FUEL & MOTION CONTROL SYSTEMS DIVISION (USA)

SPECIFICATIONS

material	STEEL COMP 4130 OVERALL
thickness	0.095 INCHES NOMINAL IN
hole_diameter	0.252 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN
hardness_rating	50.0 ROCKWELL C MINIMUM
overall_diameter	0.590 INCHES NOMINAL IN
peripheral_shape_style	ROUND
center_hole_shape_style	ROUND
cross-sectional_shape_style	RECTANGULAR
material_document_and_classification	MIL-S-46850,TY 3,GRADE 300 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-01-116-1209

COMPONENT DIAGRAM

KEY FEATURES

•

OVERALL DIAMETER: 0.590 INCHES NOMINAL IN

•

HARDNESS RATING: 50.0 ROCKWELL C MINIMUM

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-46850,TY 3,GRADE 300 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

•

CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR

•

PERIPHERAL SHAPE STYLE: ROUND

•

MATERIAL: STEEL COMP 4130 OVERALL

•

CENTER HOLE SHAPE STYLE: ROUND

•

HOLE DIAMETER: 0.252 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

OVERALL DIAMETER	0.590 INCHES NOMINAL IN
HARDNESS RATING	50.0 ROCKWELL C MINIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-46850,TY 3,GRADE 300 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
PERIPHERAL SHAPE STYLE	ROUND
MATERIAL	STEEL COMP 4130 OVERALL
CENTER HOLE SHAPE STYLE	ROUND
HOLE DIAMETER	0.252 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN
THICKNESS	0.095 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 1

10109288Reference document

Same NSN cross-reference

Reference document — Informative reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 409B191?

409B191 is a WASHER,FLAT.

What parts can replace 409B191?

There is 1 known substitute for 409B191: 10109288. Substitute compatibility should be verified for your specific system.

What is the NSN for 409B191?

409B191 is cataloged in the U.S. Government catalog under NSN 5310-01-116-1209. This indicates validated use in U.S. government and defense supply chains.

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409B191 — WASHER,FLAT

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