ST3M552-8 — WASHER,CONCAVE

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST3M552-8: WASHER,CONCAVE.

The WASHER,CONCAVE is a the manufacturer industrial component. Key specifications include radius: 0.375 INCHES NOMINAL IN, material: STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 632 OVERALL, recess_depth: 0.156 INCHES NOMINAL IN, hole_diameter: 0.685 INCHES NOMINAL IN, outside_diameter: 0.935 INCHES MINIMUM AND 0.945 INCHES MAXIMUM IN, style_designator: CONCAVE. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-237-7705, 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

ST3M552-8

NSN: 5310-00-237-7705
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

radius	0.375 INCHES NOMINAL IN
material	STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 632 OVERALL
recess_depth	0.156 INCHES NOMINAL IN
hole_diameter	0.685 INCHES NOMINAL IN
outside_diameter	0.935 INCHES MINIMUM AND 0.945 INCHES MAXIMUM IN
style_designator	CONCAVE
surface_treatment	CADMIUM AND CHROMATE OVERALL
material_thickness	0.252 INCHES NOMINAL IN
specification/standard_data	76301-ST3-552 MANUFACTURERS STANDARD
material_document_and_classification	AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5520 ASSN STD 3RD MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	5310-00-237-7705

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

RADIUS: 0.375 INCHES NOMINAL IN

•

STYLE DESIGNATOR: CONCAVE

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5520 ASSN STD 3RD MATERIAL RESPONSE OVERALL

•

OUTSIDE DIAMETER: 0.935 INCHES MINIMUM AND 0.945 INCHES MAXIMUM IN

•

RECESS DEPTH: 0.156 INCHES NOMINAL IN

•

MATERIAL THICKNESS: 0.252 INCHES NOMINAL IN

•

SPECIFICATION/STANDARD DATA: 76301-ST3-552 MANUFACTURERS STANDARD

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
RADIUS	0.375 INCHES NOMINAL IN
STYLE DESIGNATOR	CONCAVE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5643 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5528 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5520 ASSN STD 3RD MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER	0.935 INCHES MINIMUM AND 0.945 INCHES MAXIMUM IN
RECESS DEPTH	0.156 INCHES NOMINAL IN
MATERIAL THICKNESS	0.252 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA	76301-ST3-552 MANUFACTURERS STANDARD
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
MATERIAL	STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 632 OVERALL

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 ST3M552-8?

ST3M552-8 is a WASHER,CONCAVE.

What is the NSN for ST3M552-8?

ST3M552-8 is cataloged in the U.S. Government catalog under NSN 5310-00-237-7705. This indicates validated use in U.S. government and defense supply chains.

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