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600999 — WASHER,FLAT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

600999: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.016 INCHES NOMINAL IN, hole_diameter: 0.063 INCHES NOMINAL IN, overall_diameter: 0.099 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-221-6059, 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
600999
NSN: 5330-00-221-6059
NIINs: 002216059, 007641962
FSC: 5330 — Packing and Gasket Materials
CAGE: 04627 — HYSTER-YALE GROUP, INC. DIV HYSTER-YALE MATERIALS HANDLING (USA)
SPECIFICATIONS
thickness0.016 INCHES NOMINAL IN
hole_diameter0.063 INCHES NOMINAL IN
overall_diameter0.099 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-766 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-221-6059
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 600999 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SEAL WIDTH: 0.468 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 4.498 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 3.687 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE CASE
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.468 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER4.498 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER3.687 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE CASE
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 8
964NMGB1PC29Reference document
Same NSN cross-reference
Reference document — Secondary reference
00044Reference document
Same NSN cross-reference
Reference document — Secondary reference
55246Reference document
Same NSN cross-reference
Reference document — Secondary reference
66-1C60099Reference document
Same NSN cross-reference
Reference document — Secondary reference
H3-1C600999Reference document
Same NSN cross-reference
Reference document — Secondary reference
449322Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 600999?
600999 is a WASHER,FLAT.
What parts can replace 600999?
There are 8 known substitutes for 600999: 964NMGB1PC29, 00044, 55246 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 600999?
600999 is cataloged in the U.S. Government catalog under NSN 5330-00-221-6059. 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.