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28-79443 — WASHER,SLOTTED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

28-79443: WASHER,SLOTTED.

The WASHER,SLOTTED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN, outside_diameter: 1.188 INCHES NOMINAL IN, style_designator: SLOTTED, surface_treatment: ZINC OVERALL, material_thickness: 0.105 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-703-2640, 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
28-79443
NSN: 5310-00-703-2640
FSC: 5310 — Nuts and Washers
CAGE: 51665 — RIVINIUS INC LITTLEFORD MACHINERY DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
outside_diameter1.188 INCHES NOMINAL IN
style_designatorSLOTTED
surface_treatmentZINC OVERALL
material_thickness0.105 INCHES NOMINAL IN
surface_treatment_document_and_classificationPRO STD 79 FSCM 12204 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-703-2640
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28-79443 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: PRO STD 79 FSCM 12204 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: SLOTTED
•
OUTSIDE DIAMETER: 1.188 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.105 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONPRO STD 79 FSCM 12204 MFR REF SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORSLOTTED
OUTSIDE DIAMETER1.188 INCHES NOMINAL IN
MATERIAL THICKNESS0.105 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
7032640Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
79443Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 28-79443?
28-79443 is a WASHER,SLOTTED.
What parts can replace 28-79443?
There are 2 known substitutes for 28-79443: 7032640, 79443. Substitute compatibility should be verified for your specific system.
What is the NSN for 28-79443?
28-79443 is cataloged in the U.S. Government catalog under NSN 5310-00-703-2640. 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.