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PartsTable / COMPONENT / 12834-20
12834-20 ✓ 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 color: UNABLE TO DECODE, material: UNABLE TO DECODE, thickness: 0.090 INCHES NOMINAL IN, hole_diameter: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN, overall_diameter: 0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN, surface_treatment: OXIDE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-730-9066, 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
12834-20
NSN: 5310-01-730-9066
FSC: 5310
CAGE: 60756 — CEPEDA ASSOCIATES, INC. DBA CEPEDA ASSOCIATES INC (USA)
SPECIFICATIONS
colorUNABLE TO DECODE
materialUNABLE TO DECODE
thickness0.090 INCHES NOMINAL IN
hole_diameter0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
overall_diameter0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
surface_treatmentOXIDE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
specification/standard_data80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationUNABLE TO DECODE
part_name_assigned_by_controlling_agencyWASHER, FLAT
NSN5310-01-730-9066
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12834-20 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: UNABLE TO DECODE
•
HOLE DIAMETER: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
COLOR: UNABLE TO DECODE
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: UNABLE TO DECODE
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONUNABLE TO DECODE
HOLE DIAMETER0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
COLORUNABLE TO DECODE
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.870 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONUNABLE TO DECODE
MATERIALUNABLE TO DECODE
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
85203Interchangeable
interchangeable cross-reference
interchangeable
69-168Interchangeable
interchangeable cross-reference
interchangeable
SF20HInterchangeable
interchangeable cross-reference
interchangeable
370Interchangeable
interchangeable cross-reference
interchangeable
4820007204488Interchangeable
interchangeable cross-reference
interchangeable
8520 0031000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12834-20?
12834-20 is a WASHER,FLAT.
What parts can replace 12834-20?
There are 8 known substitutes for 12834-20: 85203, 69-168, SF20H and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12834-20?
12834-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-730-9066. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026