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PartsTable / COMPONENT / 2810H34-047
2810H34-047 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL, thickness: 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN, hole_diameter: 0.271 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, surface_finish: 50.0 MICROINCHES TOP, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-540-4976, 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
2810H34-047
NSN: 5310-00-540-4976
FSC: 5310
CAGE: 81996 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL
thickness0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
hole_diameter0.271 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
surface_finish50.0 MICROINCHES TOP
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
overall_diameter0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 6357 ASSN STD 1ST MATERIAL RESPONSE AND SAE ASSN STD 2ND MATERIAL RESPONSE AND SAE ASSN STD 3RD MATERIAL RESPONSE OVERALL
NSN5310-00-540-4976
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2810H34-047 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
HEAT TREATMENT: AS FABRICATED
•
SURFACE FINISH: 50.0 MICROINCHES TOP
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6357 ASSN STD 1ST MATERIAL RESPONSE AND SAE ASSN STD 2ND MATERIAL RESPONSE AND SAE ASSN STD 3RD MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OR AMS 2800 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
HEAT TREATMENTAS FABRICATED
SURFACE FINISH50.0 MICROINCHES TOP
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6357 ASSN STD 1ST MATERIAL RESPONSE AND SAE ASSN STD 2ND MATERIAL RESPONSE AND SAE ASSN STD 3RD MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL
SURFACE FINISH50.0 MICROINCHES BOTTOM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OR AMS 2800 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
THICKNESS0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
A1270-63REVBInterchangeable
interchangeable cross-reference
interchangeable
1270-63Interchangeable
interchangeable cross-reference
interchangeable
1-71801Interchangeable
interchangeable cross-reference
interchangeable
X74942PC20Interchangeable
interchangeable cross-reference
interchangeable
820-2179118PC4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2810H34-047?
2810H34-047 is a WASHER,FLAT.
What parts can replace 2810H34-047?
There are 5 known substitutes for 2810H34-047: A1270-63REVB, 1270-63, 1-71801 and 2 more. Substitute compatibility should be verified for your specific system.
Is 2810H34-047 still available?
2810H34-047 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026