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Technical Data Sheet
PartsTable / COMPONENT / 803900
803900 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: PLATE, nut_height: 0.318 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN, nut_length: 1.296 INCHES MAXIMUM IN, plate_width: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-220-1826, 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
803900
NSN: 5330-00-220-1826
FSC: 5330
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_stylePLATE
nut_height0.318 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
nut_length1.296 INCHES MAXIMUM IN
plate_width0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating32.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
plate_thickness0.115 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5330-00-220-1826
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 803900 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
•
ACCOMMODATED SHAFT DIAMETER: 1.250 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 2.063 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
•
SEALING ELEMENT STYLE: ANGULAR
•
SURFACE TREATMENT: PLASTIC CASE
•
CASE STYLE: SQUARE
•
OUTSIDE DIAMETER: 2.066 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER1.250 INCHES NOMINAL IN
HOUSING BORE DIAMETER2.063 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
SURFACE TREATMENTPLASTIC CASE
MATERIALSTEEL CASE
CASE STYLESQUARE
OUTSIDE DIAMETER2.066 INCHES NOMINAL IN
SEAL WIDTH0.250 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
64011Interchangeable
interchangeable cross-reference
interchangeable
2691Interchangeable
interchangeable cross-reference
interchangeable
705834Interchangeable
interchangeable cross-reference
interchangeable
A-A-900Interchangeable
interchangeable cross-reference
interchangeable
6917Interchangeable
interchangeable cross-reference
interchangeable
UU-T-81Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 803900?
803900 is a NUT,SELF-LOCKING,PLATE.
What parts can replace 803900?
There are 16 known substitutes for 803900: 64011, 2691, 705834 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 803900?
803900 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-220-1826. 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