1881B65 — WASHER,KEY

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

1881B65: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, hole_diameter: 4.560 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES TOP, outside_diameter: 5.500 INCHES NOMINAL IN, special_features: HEAT TREAT TO 190,000 PSI-UTS; PRIMER AND ENAMEL APPLIED TO OD ONLY; CHROME PLATE OMITTED ON ID; CRITICAL APPLICATION, surface_treatment: CADMIUM AND CHROMIUM AND PRIMER AND ENAMEL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-180-1738, 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

1881B65

NSN: 5310-01-180-1738
FSC: 5310 — Nuts and Washers
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)

SPECIFICATIONS

material	STEEL COMP 4340 OVERALL
hole_diameter	4.560 INCHES NOMINAL IN
surface_finish	63.0 MICROINCHES TOP
outside_diameter	5.500 INCHES NOMINAL IN
special_features	HEAT TREAT TO 190,000 PSI-UTS; PRIMER AND ENAMEL APPLIED TO OD ONLY; CHROME PLATE OMITTED ON ID; CRITICAL APPLICATION
surface_treatment	CADMIUM AND CHROMIUM AND PRIMER AND ENAMEL OVERALL
material_thickness	0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
internal_key_quantity	6
criticality_code_justification	FEAT
material_document_and_classification	MIL-S-8844 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-01-180-1738

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 63.0 MICROINCHES BOTTOM

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 1 FED SPEC 1ST TREATMENT RESPONSE AND QQ-C-320 CL 2 FED SPEC 2ND TREATMENT RESPONSE AND MIL-P-23377 MIL SPEC 3RD TREATMENT RESPONSE AND MIL-C-83286 MIL SPEC 4TH TREATMENT RESPONSE OVERALL

•

CRITICALITY CODE JUSTIFICATION: FEAT

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-8844 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

•

OUTSIDE DIAMETER: 5.500 INCHES NOMINAL IN

•

MATERIAL THICKNESS: 0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

SURFACE FINISH	63.0 MICROINCHES BOTTOM
SURFACE FINISH	63.0 MICROINCHES TOP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CL 1 FED SPEC 1ST TREATMENT RESPONSE AND QQ-C-320 CL 2 FED SPEC 2ND TREATMENT RESPONSE AND MIL-P-23377 MIL SPEC 3RD TREATMENT RESPONSE AND MIL-C-83286 MIL SPEC 4TH TREATMENT RESPONSE OVERALL
CRITICALITY CODE JUSTIFICATION	FEAT
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-8844 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER	5.500 INCHES NOMINAL IN
MATERIAL THICKNESS	0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
SPECIAL FEATURES	HEAT TREAT TO 190,000 PSI-UTS; PRIMER AND ENAMEL APPLIED TO OD ONLY; CHROME PLATE OMITTED ON ID; CRITICAL APPLICATION
SURFACE TREATMENT	CADMIUM AND CHROMIUM AND PRIMER AND ENAMEL OVERALL
MATERIAL	STEEL COMP 4340 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: Insurance item — stocked against contingency demandNo demilitarization required

Ready to buy 1881B65?

Compare prices from verified sellers on eBay

Buy on eBay →

As an eBay Partner, PartsTable may earn a commission. Your price is not affected.

FREQUENTLY ASKED QUESTIONS

What is 1881B65?

1881B65 is a WASHER,KEY.

What is the NSN for 1881B65?

1881B65 is cataloged in the U.S. Government catalog under NSN 5310-01-180-1738. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

1881B65 — WASHER,KEY

Request a Quote — 1881B65