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A20479 — CONNECTOR,PLUG,ELECTRICAL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A20479: CONNECTOR,PLUG,ELECTRICAL.

The CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include diameter: 0.191 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN, material: LEAD CONDUCTOR ACCOMMODATION, overall_length: 2.160 INCHES MINIMUM AND 2.170 INCHES MAXIMUM IN, undercut_width: 0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN, first_end_style: SQUARE, hardness_rating: 59.0 ROCKWELL D MINIMUM AND 65.0 ROCKWELL D MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-731-3175, 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
A20479
NSN: 5315-00-731-3175
NIINs: 007313175, 017065453, 017257940
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: U4574 — FNH UK LTD (GBR)
SPECIFICATIONS
diameter0.191 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
materialLEAD CONDUCTOR ACCOMMODATION
overall_length2.160 INCHES MINIMUM AND 2.170 INCHES MAXIMUM IN
undercut_width0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
first_end_styleSQUARE
hardness_rating59.0 ROCKWELL D MINIMUM AND 65.0 ROCKWELL D MAXIMUM OVERALL
effective_length1.835 INCHES NOMINAL IN
style_designatorGROOVE
surface_treatmentPHOSPHATE OVERALL
undercut_diameter0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
first_end_locationBOTH ENDS
material_thickness0.75 INCHES IN
NSN5315-00-731-3175
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A20479 · 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
•
UNDERCUT WIDTH: 0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
•
UNDERCUT DIAMETER: 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
•
FIRST END LOCATION: BOTH ENDS
•
FIRST END STYLE: SQUARE
•
HARDNESS RATING: 59.0 ROCKWELL D MINIMUM AND 65.0 ROCKWELL D MAXIMUM OVERALL
•
STYLE DESIGNATOR: GROOVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ S 631 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.191 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
UNDERCUT DIAMETER0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
FIRST END LOCATIONBOTH ENDS
FIRST END STYLESQUARE
HARDNESS RATING59.0 ROCKWELL D MINIMUM AND 65.0 ROCKWELL D MAXIMUM OVERALL
STYLE DESIGNATORGROOVE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ S 631 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.191 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
OVERALL LENGTH2.160 INCHES MINIMUM AND 2.170 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
SUBSTITUTES & CROSS-REFERENCES 1
7313175Reference document
Same NSN cross-reference
Reference document — Secondary 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 A20479?
A20479 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace A20479?
There is 1 known substitute for A20479: 7313175. Substitute compatibility should be verified for your specific system.
What is the NSN for A20479?
A20479 is cataloged in the U.S. Government catalog under NSN 5315-00-731-3175. 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.