PartsTable
Technical Data Sheet
623863 ✓ 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 4130 OVERALL, thickness: 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN, hole_diameter: 0.255 INCHES NOMINAL IN, heat_treatment: AS FABRICATED, surface_finish: 63.0 MICROINCHES BOTTOM, 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 5310-00-111-2184, 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
623863
NSN: 5310-00-111-2184
FSC: 5310
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
thickness0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
hole_diameter0.255 INCHES NOMINAL IN
heat_treatmentAS FABRICATED
surface_finish63.0 MICROINCHES BOTTOM
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
overall_diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-111-2184
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 623863 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAT TREATMENT: AS FABRICATED
SURFACE FINISH: 63.0 MICROINCHES TOP
HOLE DIAMETER: 0.255 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
SURFACE TREATMENT: CADMIUM OVERALL
MATERIAL: STEEL COMP 4130 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAT TREATMENTAS FABRICATED
SURFACE FINISH63.0 MICROINCHES TOP
HOLE DIAMETER0.255 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 4130 OVERALL
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
6090Interchangeable
interchangeable cross-reference
interchangeable
1431-9-11Interchangeable
interchangeable cross-reference
interchangeable
1431-4-5Interchangeable
interchangeable cross-reference
interchangeable
060905Interchangeable
interchangeable cross-reference
interchangeable
RW28051107Interchangeable
interchangeable cross-reference
interchangeable
853230Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 623863?
623863 is a WASHER,FLAT.
What parts can replace 623863?
There are 20 known substitutes for 623863: 6090, 1431-9-11, 1431-4-5 and 17 more. Substitute compatibility should be verified for your specific system.
Is 623863 still available?
623863 is currently cancelled.
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