ST4M178A3 — WASHER,SPRING TENSION

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST4M178A3: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 OVERALL, hole_diameter: 1.900 INCHES NOMINAL1.900 INCHES NOMINAL IN, overall_height: 0.307 INCHES NOMINAL0.307 INCHES NOMINAL IN, outside_diameter: 2.360 INCHES NOMINAL2.360 INCHES NOMINAL IN, special_features: ONE TAB,0.200 IN. W,ON EACH SIDE OF CENTER HOLEONE TAB,0.200 IN.

W,ON EACH SIDE OF CENTER HOLE IN, style_designator: SPRING TENSION. This part is cataloged in the U.S. Government catalog under NSN 5310-01-030-4919, 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

ST4M178A3

NSN: 5310-01-030-4919
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	COPPER ALLOY 172 OVERALL
hole_diameter	1.900 INCHES NOMINAL1.900 INCHES NOMINAL IN
overall_height	0.307 INCHES NOMINAL0.307 INCHES NOMINAL IN
outside_diameter	2.360 INCHES NOMINAL2.360 INCHES NOMINAL IN
special_features	ONE TAB,0.200 IN. W,ON EACH SIDE OF CENTER HOLEONE TAB,0.200 IN. W,ON EACH SIDE OF CENTER HOLE IN
style_designator	SPRING TENSION
surface_treatment	TIN OVERALL
material_thickness	0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN
material_document_and_classification	QQ-C-533,TEMPER AT FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	MIL-T-10727 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	5310-01-030-4919

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-T-10727 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

STYLE DESIGNATOR: SPRING TENSION

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533,TEMPER AT FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

OUTSIDE DIAMETER: 2.360 INCHES NOMINAL2.360 INCHES NOMINAL IN

•

MATERIAL THICKNESS: 0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN

•

SURFACE TREATMENT: TIN OVERALL

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.307 INCHES NOMINAL0.307 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-T-10727 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATOR	SPRING TENSION
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-533,TEMPER AT FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER	2.360 INCHES NOMINAL2.360 INCHES NOMINAL IN
MATERIAL THICKNESS	0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN
SPECIAL FEATURES	ONE TAB,0.200 IN. W,ON EACH SIDE OF CENTER HOLEONE TAB,0.200 IN. W,ON EACH SIDE OF CENTER HOLE IN
SURFACE TREATMENT	TIN OVERALL
MATERIAL	COPPER ALLOY 172 OVERALL
HOLE DIAMETER	1.900 INCHES NOMINAL1.900 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

No substitute or cross-reference records for this part.

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is ST4M178A3?

ST4M178A3 is a WASHER,SPRING TENSION.

What is the NSN for ST4M178A3?

ST4M178A3 is cataloged in the U.S. Government catalog under NSN 5310-01-030-4919. This indicates validated use in U.S. government and defense supply chains.

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ST4M178A3 — WASHER,SPRING TENSION

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