PartsTable
Technical Data Sheet
1979763-1 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, thickness: 0.021 INCHES NOMINAL IN, hole_diameter: 0.159 INCHES NOMINAL IN, surface_finish: 40.0 MICROINCHES BOTTOM, overall_diameter: 0.255 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-662-0750, 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
1979763-1
NSN: 5310-00-662-0750
FSC: 5310
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
thickness0.021 INCHES NOMINAL IN
hole_diameter0.159 INCHES NOMINAL IN
surface_finish40.0 MICROINCHES BOTTOM
overall_diameter0.255 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-662-0750
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1979763-1 · 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
HOLE DIAMETER: 0.159 INCHES NOMINAL IN
SURFACE FINISH: 40.0 MICROINCHES INNER
MATERIAL: STEEL COMP 302 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
OVERALL DIAMETER: 0.255 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.159 INCHES NOMINAL IN
SURFACE FINISH40.0 MICROINCHES INNER
MATERIALSTEEL COMP 302 OVERALL
SURFACE FINISH40.0 MICROINCHES TOP
SURFACE FINISH40.0 MICROINCHES BOTTOM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.255 INCHES NOMINAL IN
THICKNESS0.021 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
314950Interchangeable
interchangeable cross-reference
interchangeable
332Interchangeable
interchangeable cross-reference
interchangeable
5020WInterchangeable
interchangeable cross-reference
interchangeable
327444Interchangeable
interchangeable cross-reference
interchangeable
327244Interchangeable
interchangeable cross-reference
interchangeable
17WE205JInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1979763-1?
1979763-1 is a WASHER,FLAT.
What parts can replace 1979763-1?
There are 6 known substitutes for 1979763-1: 314950, 332, 5020W and 3 more. Substitute compatibility should be verified for your specific system.
Is 1979763-1 still available?
1979763-1 is currently cancelled.
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