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2278419-00 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2278419-00: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, first_end_style: SQUARE, special_features: WITH BOTH ENDS CHAMFERED AT 0.020IN. X 45 DEGREES; ONE END IS THREADED 0.250-20UNC-2A X 0.560 IN.L A, pin_overall_length: 3.120 INCHES NOMINAL IN, pin_overall_diameter: 0.2490 INCHES NOMINAL IN, end_item_identification: 4931-00-121-8707 T/SET F/CONTROL SUBSYSTEM.

This part is cataloged in the U.S. Government catalog under NSN 5315-01-181-5926, 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
2278419-00
NSN: 5315-01-181-5926
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 06401 — L3 TECHNOLOGIES, INC. DBA COMMUNICATION SYSTEMS-WEST DIV COMMUNICATION SYSTEMS-WEST (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
first_end_styleSQUARE
special_featuresWITH BOTH ENDS CHAMFERED AT 0.020IN. X 45 DEGREES; ONE END IS THREADED 0.250-20UNC-2A X 0.560 IN.L A
pin_overall_length3.120 INCHES NOMINAL IN
pin_overall_diameter0.2490 INCHES NOMINAL IN
end_item_identification4931-00-121-8707 T/SET F/CONTROL SUBSYSTEM
second_end_relationship_with_first_endIDENTICAL
NSN5315-01-181-5926
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2278419-00 · 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
•
FIRST END STYLE: SQUARE
•
PIN OVERALL DIAMETER: 0.2490 INCHES NOMINAL IN
•
PIN OVERALL LENGTH: 3.120 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: STEEL COMP 303 OVERALL
TECHNICAL CHARACTERISTICS
FIRST END STYLESQUARE
PIN OVERALL DIAMETER0.2490 INCHES NOMINAL IN
PIN OVERALL LENGTH3.120 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
SPECIAL FEATURESWITH BOTH ENDS CHAMFERED AT 0.020IN. X 45 DEGREES; ONE END IS THREADED 0.250-20UNC-2A X 0.560 IN.L A
END ITEM IDENTIFICATION4931-00-121-8707 T/SET F/CONTROL SUBSYSTEM
MATERIALSTEEL COMP 303 OVERALL
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
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 2278419-00?
2278419-00 is a PIN,STRAIGHT,HEADLESS.
What is the NSN for 2278419-00?
2278419-00 is cataloged in the U.S. Government catalog under NSN 5315-01-181-5926. 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.