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21403-1 — CONNECTOR,PLUG,ELECTRICAL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

21403-1: CONNECTOR,PLUG,ELECTRICAL.

The CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.125 INCHES NOMINAL IN, body_style: STRAIGHT SHAPE, EXTERNAL COUPLING, shell_type: SOLID, hole_diameter: 0.502 INCHES NOMINAL IN, terminal_type: CRIMP SINGLE MATING END SINGLE CONTACT GROUPING. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-601-9140, 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
21403-1
NSN: 5310-00-601-9140
NIINs: 006019140, 013218076, 014322654
FSC: 5310 — Nuts and Washers
CAGE: 83179 — JOY MFG CO AIR POWER GROUP MICHIGAN CITY PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.125 INCHES NOMINAL IN
body_styleSTRAIGHT SHAPE, EXTERNAL COUPLING
shell_typeSOLID
hole_diameter0.502 INCHES NOMINAL IN
terminal_typeCRIMP SINGLE MATING END SINGLE CONTACT GROUPING
overall_diameter0.887 INCHES NOMINAL IN
terminal_locationBACK SINGLE MATING END SINGLE CONTACT GROUPING
mating_end_quantity1
contact_removabilityNONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
threaded_device_typeCOUPLING FACILITY
included_contact_typeCOAXIAL SOCKET SINGLE MATING END SINGLE CONTACT GROUPING
NSN5310-00-601-9140
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21403-1 · 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
•
OVERALL DIAMETER: 0.887 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.502 INCHES NOMINAL IN
•
THICKNESS: 0.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.887 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.502 INCHES NOMINAL IN
THICKNESS0.125 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
00214031Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21403-1?
21403-1 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 21403-1?
There is 1 known substitute for 21403-1: 00214031. Substitute compatibility should be verified for your specific system.
What is the NSN for 21403-1?
21403-1 is cataloged in the U.S. Government catalog under NSN 5310-00-601-9140. 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.