ST4M203-4 — WASHER,FLAT

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST4M203-4: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, thickness: 0.032 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM, overall_diameter: 0.500 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-115-3749, 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

ST4M203-4

NSN: 5310-01-115-3749
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	STEEL COMP 4130 OVERALL
thickness	0.032 INCHES MAXIMUM IN
hardness_rating	40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
overall_diameter	0.500 INCHES MAXIMUM IN
surface_treatment	CADMIUM OVERALL
peripheral_shape_style	ROUND
center_hole_shape_style	ROUND
cross-sectional_shape_style	RECTANGULAR
material_document_and_classification	MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	MIL-C-8837 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	5310-01-115-3749

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-8837 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

OVERALL DIAMETER: 0.500 INCHES MAXIMUM IN

•

HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

•

CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR

•

COLOR: BLUE, LIGHT OVERALL

•

SURFACE TREATMENT: CADMIUM OVERALL

•

PERIPHERAL SHAPE STYLE: ROUND

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-8837 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER	0.500 INCHES MAXIMUM IN
HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
COLOR	BLUE, LIGHT OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
PERIPHERAL SHAPE STYLE	ROUND
MATERIAL	STEEL COMP 4130 OVERALL
CENTER HOLE SHAPE STYLE	ROUND

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

No substitute or cross-reference records for this part.

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 ST4M203-4?

ST4M203-4 is a WASHER,FLAT.

What is the NSN for ST4M203-4?

ST4M203-4 is cataloged in the U.S. Government catalog under NSN 5310-01-115-3749. This indicates validated use in U.S. government and defense supply chains.

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ST4M203-4 — WASHER,FLAT

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