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K800430 — WASHER,SHOULDERED AND RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

K800430: WASHER,SHOULDERED AND RECESSED.

The WASHER,SHOULDERED AND RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, hardness_rating: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM, recess_diameter: 0.235 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-017-0523, 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
K800430
NSN: 5310-00-017-0523
FSC: 5310 — Nuts and Washers
CAGE: 32904 — IN SPECK CORP DBA IN SPECK CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
hardness_rating30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
recess_diameter0.235 INCHES NOMINAL IN
shoulder_height0.052 INCHES NOMINAL IN
outside_diameter0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
style_designatorSHOULDERED AND RECESSED
shoulder_diameter0.290 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
material_thickness0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
material_document_and_classificationAMS 5612 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-017-0523
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K800430 · 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
•
SHOULDER HEIGHT: 0.052 INCHES NOMINAL IN
•
HEAT TREATMENT: AS FABRICATED
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SHOULDERED AND RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5612 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.290 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.052 INCHES NOMINAL IN
HEAT TREATMENTAS FABRICATED
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSHOULDERED AND RECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5612 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
SHOULDER DIAMETER0.290 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
RECESS DIAMETER0.235 INCHES NOMINAL IN
MATERIALSTEEL 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 2
K800430-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
KBK430-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 K800430?
K800430 is a WASHER,SHOULDERED AND RECESSED.
What parts can replace K800430?
There are 2 known substitutes for K800430: K800430-4, KBK430-4. Substitute compatibility should be verified for your specific system.
What is the NSN for K800430?
K800430 is cataloged in the U.S. Government catalog under NSN 5310-00-017-0523. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.