1881B279 — WASHER,KEYWAY

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

1881B279: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 4.002 INCHES MINIMUM AND 4.007 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES ALL SURFACES, outside_diameter: 5.000 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL, external_keyway_width: 0.440 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-173-1752, 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

1881B279

NSN: 5310-01-173-1752
FSC: 5310 — Nuts and Washers
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
hole_diameter	4.002 INCHES MINIMUM AND 4.007 INCHES MAXIMUM IN
surface_finish	125.0 MICROINCHES ALL SURFACES
outside_diameter	5.000 INCHES NOMINAL IN
special_features	TWO INTERNAL KEYS EQUALLY SPACED 0.060 IN.WIDTH;ONE EXTERNAL KEY IRREGULAR SHAPE 3.910 WIDTH;HEAT TREATED 180,000 TO 200,000 PSI-UTS PER MIL-H-6875 IN
surface_treatment	CADMIUM OVERALL
external_keyway_width	0.440 INCHES NOMINAL IN
external_keyway_length	0.165 INCHES NOMINAL IN
external_keyway_quantity	6
criticality_code_justification	FEAT
material_document_and_classification	CLEVELAND PNEUMATIC CO. 1881B279-60 REF 4340-VAR MFR REF SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	5310-01-173-1752

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 125.0 MICROINCHES ALL SURFACES

•

EXTERNAL KEYWAY WIDTH: 0.440 INCHES NOMINAL IN

•

EXTERNAL KEYWAY QUANTITY: 6

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

CRITICALITY CODE JUSTIFICATION: FEAT

•

MATERIAL DOCUMENT AND CLASSIFICATION: CLEVELAND PNEUMATIC CO. 1881B279-60 REF 4340-VAR MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

OUTSIDE DIAMETER: 5.000 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

SURFACE FINISH	125.0 MICROINCHES ALL SURFACES
EXTERNAL KEYWAY WIDTH	0.440 INCHES NOMINAL IN
EXTERNAL KEYWAY QUANTITY	6
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CRITICALITY CODE JUSTIFICATION	FEAT
MATERIAL DOCUMENT AND CLASSIFICATION	CLEVELAND PNEUMATIC CO. 1881B279-60 REF 4340-VAR MFR REF SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER	5.000 INCHES NOMINAL IN
SPECIAL FEATURES	TWO INTERNAL KEYS EQUALLY SPACED 0.060 IN.WIDTH;ONE EXTERNAL KEY IRREGULAR SHAPE 3.910 WIDTH;HEAT TREATED 180,000 TO 200,000 PSI-UTS PER MIL-H-6875 IN
SURFACE TREATMENT	CADMIUM OVERALL
MATERIAL	STEEL CORROSION RESISTING 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 1881B279?

1881B279 is a WASHER,KEYWAY.

What is the NSN for 1881B279?

1881B279 is cataloged in the U.S. Government catalog under NSN 5310-01-173-1752. This indicates validated use in U.S. government and defense supply chains.

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1881B279 — WASHER,KEYWAY

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