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28443 — RING ASSEMBLY,4TH STAGE

✓ Government record, cited
Cellularline · NUT WASHER
PRODUCT OVERVIEW

28443: RING ASSEMBLY,4TH STAGE.

The RING ASSEMBLY,4TH STAGE is a Cellularline industrial component. This part is cataloged in the U.S. Government catalog under NSN 5315-00-470-4800, 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
28443
NSN: 5315-00-470-4800
NIINs: 004704800, 008958105, 014427567
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 64104 — DRESSER, LLC (USA)
SPECIFICATIONS
Part Number28443
ManufacturerCellularline
NSN5315-00-470-4800
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28443 · Cellularline ⚠ 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
•
STARTING EDGE SHAPE: STRAIGHT
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
STYLE DESIGNATOR: FLAT BOTTOM
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CIRCLE DIAMETER: 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.422 INCHES MINIMUM AND 0.428 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF 13
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS
STARTING EDGE SHAPESTRAIGHT
CRITICALITY CODE JUSTIFICATIONZZZY
STYLE DESIGNATORFLAT BOTTOM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CIRCLE DIAMETER0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
KEY HEIGHT0.422 INCHES MINIMUM AND 0.428 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF 13
MATERIALNICKEL ALLOY OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMAGNETIC PERMEABILITY SHALL BE LESS THAN 1.2 BEFORE FABRICATION AND NOT GREATER THAN 2.0 AFTER FABRICATION AS MEASURED IN A 200 OERSTED FIELD
THICKNESS0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 28443?
28443 is a RING ASSEMBLY,4TH STAGE manufactured by Cellularline.
What is the NSN for 28443?
28443 is cataloged in the U.S. Government catalog under NSN 5315-00-470-4800. 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.